John Hancock Center

For the tower in Boston, see John Hancock Tower. For other similarly named buildings, see John Hancock Building.

The John Hancock Center is a 100-story, 1,128-foot^[7] supertall skyscraper located in Chicago, Illinois. Located in the Magnificent Mile district, the building was officially renamed 875 North Michigan Avenue in 2018.

875 North Michigan Avenue
875 North Michigan Avenue in October 2015, viewed from the Willis Tower
Location within Chicago metropolitan area Show map of Chicago metropolitan area John Hancock Center (Illinois) Show map of Illinois John Hancock Center (the United States) Show map of the United States
Record height
Tallest in Chicago from 1969 to 1973[I]
Preceded by	Richard J. Daley Center
Surpassed by	Willis Tower
General information
Status	Completed
Architectural style	Structural Expressionism
Location	Chicago, Illinois, U.S.
Address	875 North Michigan Avenue (additional entrances at 175 East Delaware Place and 170 East Chestnut Street)
Coordinates	41.8988°N 87.6230°W / 41.8988; -87.6230
Construction started	1965
Completed	1969; 55 years ago (1969)
Cost	US$100 million[1] ($831 million in 2023 dollars[2])
Owner	The Hearn Company
Height
Architectural	1,128 ft (344 m)[3]
Tip	1,500 ft (457 m)[3]
Roof	1,128 ft (344 m)
Top floor	1,054 ft (321 m)[3]
Observatory	1,030 ft (314 m)[3]
Technical details
Floor count	100[3]
Floor area	2,799,973 sq ft (260,126 m2)[3]
Lifts/elevators	50, made by Otis Elevator Company[3]
Design and construction
Architect(s)	Bruce Graham & Fazlur Rahman Khan Skidmore, Owings and Merrill
Developer	John Hancock Insurance
Structural engineer	Skidmore, Owings & Merrill LLP (SOM)
Main contractor	Tishman Construction Co.
Website
875northmichiganavenue.com
References
[3][4][5][6]

The skyscraper was designed by Peruvian-American chief designer Bruce Graham and Bangladeshi-American structural engineer Fazlur Rahman Khan of Skidmore, Owings and Merrill (SOM).^[8] When the building topped out on May 6, 1968,^[1] it was the second-tallest building in the world after the Empire State Building, in New York City, and the tallest in Chicago. It is currently the fifth-tallest building in Chicago and the thirteenth-tallest in the United States, behind the Aon Center in Chicago and ahead of the Comcast Technology Center in Philadelphia. When measured to the top of its antenna masts, it stands at 1,500 feet (457 m).^[9] The building is home to several offices and restaurants, as well as about 700 condominiums, and at the time of its completion contained the highest residence in the world. The building was named for John Hancock Mutual Life Insurance Company, a developer and original tenant of the building, which itself was named for the U.S. Founding Father John Hancock.^[10] In 2018 John Hancock Insurance, years after leaving the building, requested that its name be removed; the owner is seeking another naming rights deal.^[10]

From the 95th-floor restaurant, which closed in late 2023, diners were able look out at Chicago and Lake Michigan. The observatory (360 Chicago),^[11] which competes with the Willis Tower's Skydeck, has a 360° view of the city, up to four states, and a distance of over 80 miles (130 km). 360 Chicago is home to TILT, a moving platform that leans visitors over the edge of the skyscraper to a 30-degree angle,^[12] a full bar with local selections,^[13] Chicago's only open-air SkyWalk, and also features free interactive high-definition touchscreens in six languages.^[14] The 44th-floor sky lobby features the highest indoor swimming pool in the United States.^[15]

History

20th century

August 17, 1968 photograph of the John Hancock Center during construction

The project, which would become the world's second tallest building at opening, was conceived and owned by Jerry Wolman in late 1964. The project was financed by John Hancock Mutual Life Insurance Company. Construction of the tower was interrupted in 1967 due to a flaw in an innovative engineering method used to pour concrete in stages, that was discovered when the building was 20 stories high.^[16] The engineers were getting the same soil settlements for the 20 stories that had been built as what they had expected for the entire 99 stories. This forced the owner to stop development until the engineering problem could be resolved, resulting in a credit crunch. The situation is similar to the one faced during the construction of 111 West Wacker, then known as the Waterview Tower. Wolman's bankruptcy resulted in John Hancock taking over the project, which retained the original design, architect, engineer, and main contractor.

The building's first resident was Ray Heckla, the original building engineer, responsible for the residential floors from 44 to 92. Heckla moved his family in April 1969, before the building was completed.

The 1988 film Poltergeist III was set at the John Hancock Center and was filmed in early 1987.^[17]

21st century

On December 10, 2006, the non-residential portion of the building was sold by San Francisco–based Shorenstein Properties for $385 million^{[lower-alpha 1]} and was purchased by a joint venture of Chicago-based Golub & Company and the Whitehall Street Real Estate Funds.^[18] Shorenstein Properties had bought the building in 1998 for $220 million.^{[lower-alpha 2]}

Golub defaulted on its debt and the building was acquired in 2012 by Deutsche Bank, who subsequently carved up the building.^[19] The venture of Deutsche Bank and New York–based NorthStar Realty Finance paid an estimated $325 million^{[lower-alpha 3]} for debt on 875 North Michigan Avenue in 2012 after Shorenstein Properties defaulted on $400 million^{[lower-alpha 4]} in loans.^[20] The observation deck was sold to Paris-based Montparnasse 56 Group for between $35 million and $45 million^{[lower-alpha 5]} in July 2012.^[21] That same month, Prudential Real Estate Investors acquired the retail and restaurant space for almost $142 million.^{[lower-alpha 6][22]} In November 2012, Boston-based American Tower Corp affiliate paid $70 million^{[lower-alpha 7]} for the antennas.^[23] In June 2013, a venture of Chicago-based real estate investment firm Hearn Co., New York–based investment firm Mount Kellett Capital Management L.P. and San Antonio–based developer Lynd Co. closed on the expected acquisition of 875 North Michigan Avenue's 856,000 square feet (79,500 m²) of office space and 710-car parking deck. The Chicago firm did not disclose a price, but sources said it was about $145 million.^{[lower-alpha 8][20]} This was the last step in that piecemeal sale process.^[20] In May 2016, Hearn Co. announced that they were seeking buyers for the naming rights with possible signage rights for the building.^[24]

Hustle up the Hancock is an annual stair climb race up the 94 floors from the Michigan Avenue level to the observation deck. It is held on the last Sunday of February. The climb benefits Respiratory Health Association. The record time as of 2007 is 9 minutes 30 seconds.

The building is home to the transmitter of Univision's WGBO-DT (channel 66), while all other full-power television stations in Chicago broadcast from Willis Tower. The City Colleges of Chicago's WYCC (channel 20) transmitted from the building until November 2017, when it departed the air as part of the 2016 FCC spectrum auction.

On February 12, 2018, John Hancock Insurance requested that its name and logos throughout the building's interior be removed immediately; John Hancock had not had a naming-rights deal with the skyscraper's owners since 2013. The building's name was subsequently changed to its street address as 875 North Michigan Avenue.^[25]

Incidents

On November 11, 1981, Veterans Day, high-rise firefighting and rescue advocate Dan Goodwin, for the purpose of calling attention to the inability to rescue people trapped in the upper floors of skyscrapers, successfully climbed the building's exterior wall. Wearing a wetsuit and using a climbing device that enabled him to ascend the I-beams on the building's side, Goodwin battled repeated attempts by the Chicago Fire Department to knock him off. Fire Commissioner William Blair ordered Chicago firemen to stop Goodwin by directing a fully engaged fire hose at him and by blasting fire axes through nearby glass from the inside. Fearing for Goodwin's life, Mayor Jane Byrne intervened and allowed him to continue to the top.^[26][27]

On December 18, 1997, comedian Chris Farley was found dead in his apartment on the 60th floor of the building.^[28][29]

On March 9, 2002, part of a scaffold fell 43 stories after being torn loose by wind gusts around 60 mph (100 km/h) crushing several cars, killing three people in two of them. The remaining part of the stage swung back-and-forth in the gusts repeatedly slamming against the building, damaging cladding panels, breaking windows, and sending pieces onto the street below.

On November 21, 2015, a fire broke out in an apartment on the 50th floor of the building. The Chicago Fire Department was able to extinguish the fire after an hour and a half; five people suffered minor injuries.^[30]

On February 11, 2018, a fire in a car on the seventh floor required approximately 150 firefighters to extinguish.^[31]

On November 16, 2018, an express elevator cable broke. Initial reports stated that an elevator with six passengers plunged 84 stories from the 95th to 11th floor. Since express elevators are not accessible from floors within the express zone, a team of firefighters had to break through a brick wall from the parking garage to extricate the passengers, none of whom suffered injuries. Elevators to the 95th/96th floor were closed thereafter pending investigation.^[32] Subsequent investigation documented only a controlled descent from the 20th floor to the 11th floor.^[33]

A piece of cladding fell from the building on January 5, 2022.^[34]

Architecture

John Hancock Center in 1974

X-bracing on the tower's facade

One of the most famous buildings of the structural expressionist style, the skyscraper's distinctive X-braced exterior shows that the structure's skin is part of its "tubular system". This is one of the engineering techniques which the designers used to achieve a record height; the tubular system is the structure that keeps the building upright during wind and earthquake loads. This X-bracing allows for both higher performance from tall structures and the ability to open up the inside floorplan. Such original features have allowed 875 North Michigan Avenue to become an architectural icon. It was pioneered by Bangladeshi-American structural civil engineer Fazlur Khan and chief architect Bruce Graham.

The interior was remodeled in 1995, adding to the lobby travertine, black granite, and textured limestone surfaces. The elliptical-shaped plaza outside the building serves as a public oasis with seasonal plantings and a 12-foot (3.7 m) waterfall. A band of white lights at the top of the building is visible all over Chicago at night, and changes colors for different events. For example, at Christmas time the colors are green and red. When a Chicago-area sports team goes far in the playoffs, the colors are changed to match that team's colors.

The building is a member of the World Federation of Great Towers. It has won various awards for its distinctive style, including the Distinguished Architects Twenty-five Year Award from the American Institute of Architects in May 1999.^[35] In celebration of the 2018 Illinois Bicentennial, the John Hancock Center was selected as one of the Illinois 200 Great Places^[36] by the American Institute of Architects Illinois component (AIA Illinois) and was recognized by USA Today Travel magazine, as one of AIA Illinois' selections for Illinois 25 Must See Places.^[37]

2015 photograph of the interior of one of the Otis Elevator Company-manufactured express elevators that serve the observation deck, The Signature Room, and Signature Lounge

The building is only partially protected by a fire sprinkler system,^[38] as the residential floors do not have sprinklers.^[39] Including its antennas, the building has a height of 1,500 feet (457 m), making it the thirty-third tallest building in the world when measured to pinnacle height.^[40]

Features

360 Chicago Observation Deck

Panoramic photograph showing the southeast interior corner of the observation deck in 2017

Located on the 94th floor, 360 Chicago Observation Deck is 875 North Michigan Avenue's horizon observatory. The floor of the observatory is 1,030 feet (310 m) above the street-level below. The entrance can be found on the concourse level of 875 North Michigan Avenue, accessible from the Michigan Avenue side of the building. The observatory, previously named John Hancock Observatory, has been independently owned and operated since 2014 by the Montparnasse 56 Group of Paris, France.^[41] The elevators are credited as the fastest in the Western Hemisphere, with a top speed of 1,800 ft/min (20.5 mph; 9 m/s).^[42] The observatory boasts more floor space than its direct competitor, Skydeck at the Willis Tower. There is a full bar called BAR 94 which stocks local beer and spirits from Revolution Brewing and KOVAL Distillery.^[43] The observation deck also features an open-air "skydeck" area.

The Observatory elevators of 875 North Michigan Avenue, manufactured by Otis, travel 96 floors at a top speed of 1,800 ft/min (20 mph; 9.1 m/s). It has been said the elevators to the observation deck are the fastest in North America, reaching the 95th floor in 38 seconds if they could run the entire trip at top speed.^[40]

For several years in the 2010s, during its winter season, the observation deck would feature the "world's highest skating rink", with an artificial ice rink being seasonally installed.^[44][45][46]

At one point, observation deck had a mascot named Seemore Miles.^[44]

In the summer of 2014, 360 Chicago added its TILT attraction. TILT, which requires an additional fee to experience, features a series of floor-to-ceiling windows that slowly tilt outside the building to 30°.^[47]

General images of the 360 Chicago Observation Deck

Tourists enjoy north-facing observation deck views in 2017 Tourists enjoy views at the southwest corner of the observation deck in 2017 Tourists enjoy south-facing views in 2005 Southeast corner of the observation deck in 2015 Northeast corner of the observation deck in 2005 Children skate on an artificial ice rink erected on along the north-facing end of the observation deck in late-2011 Plaza-level entrance to the observatory photographed in 2013 (when it was known as the "John Hancock Center Observatory")

Images of the TILT Thrill Ride

2014 interior view of tourists on the TILT Thrill Ride, with the attraction in its outward-leaning position 2014 interior view of tourists on the TILT Thrill Ride, with the attraction in its outward-leaning position 2014 interior view of the TILT Thrill Ride in its non-tilted position Exterior view showing tourists on the TILT Thrill Ride in 2014

Images of the SkyWalk

Tourists in the observation deck's screen-protected open-air SkyWalk area in 2013 Exterior view of the SkyWalk area in 2014 Entrance to the open-air SkyWalk in 2005

95th floor restaurant and 96th floor bar

Southeast corner of the Signature Room in 2017

Separate from its observatory, 875 Michigan Avenue has a restaurant space on its 95th floor and a bar space on its 96th floor. Prior to 1993, the space was occupied by a restaurant named The 95th.^[48] From 1993 until 2023, the 95th floor was home to a restaurant named the Signature Room, with the accompanying bar on the 96th floor being called the Signature Lounge.^[49][50][51] The name alluded to the famous signature of early American figure John Hancock.^[48] The restaurant was an upscale establishment that offered patrons scenic views. It enforced a dress code for patrons.^[50] It received numerous awards. In April 2023, the restaurant and bar were listed for sale.^[52] In September 2023, the Signature Room abruptly ceased operations, with ownership citing "severe economic hardship" that they attributed to the impact of the earlier COVID-19 pandemic.^[53][54]

Images of the Signature Room

Northeast corner of the Signature Room in 2014 East-facing view of The Signature Room in 2008 South-facing view showing patrons dining in The Signature Room at night in 2018

Images of the Signature Lounge

The Signature Lounge facing south in 2017 Patrons of Signature Lounge enjoying north-facing views in 2017 Patrons of The Signature Lounge enjoy west facing views in 2017 The Signature Lounge facing west at night in 2018

Retail plaza

Plaza, photographed in 2007

The building features a two-level outdoor plaza along its Michigan Avenue face. The plaza contains retail and dinning tenants. The top level of the plaza is at street level, while the lower level is sunken below the street level.^[55]

Current tenants include The Cheesecake Factory and The North Face.^[56] Past tenants have included Best Buy.^[57]

The plaza was originally rectangular in shape.^[58] Per the Chicago Tribune, the plaza was modeled after the plaza at New York City's Rockefeller Center. The plaza's design featured a fountain pool that would be turned into an ice rink in colder weather.^[59]

In 1988, plans were unveiled by the John Hancock Mutual Life Insurance Company (the owners of the building at the time) to replace the plaza with a "$20 million^{[lower-alpha 9]} glass and marble three-story atrium". One rationale cited by building's management was they claimed that access to the building's ground level was complicated by the need of pedestrians to circumnavigate around the courtyard in order to reach the street-level entrance to the building's lobby. They also cited a belief that the building's entrance was too understated for a building of its level of prominence. This atrium proposal faced backlash from local residents who felt that such an addition would mar the appearance of the landmark building.^[60] In 1989, newly-elected mayor Richard M. Daley criticized the proposed atrium and the plans were ultimately abandoned.^[58]

In 1994, the plaza was renovated, with the sunken portion transforming from its previous rectangular shape to an elliptical shape. In 1999, Chicago Tribune architecture critic Blair Kamin wrote that this renovation had made the plaza a more "welcoming" space.^[58] This renovation came after the more dramatic late-1980s renovation plans were abandoned.^[58] A further $10 million renovation for the plaza was considered by the building's owners in the mid-2010s which would have added features such as video screens and decorative prisms to the plaza.^[55][61]

Images of the plaza

Plaza, photographed in 2007 Christmas tree in the plaza in December 2011 Plaza, photographed from Michigan Avenue street level in 2005 Plaza, photographed in 2015 Black and white photograph of the plaza in 2021 Plaza, photographed from Michigan Avenue street level in 2014

Parking garage

Housed within several of the lower levels of the building is a parking garage, which cars enter and depart via a spiral vehicle ramp.^[62]

Images of the parking garage

Spiral vehicle ramp to the parking garage, photographed in 2015 Spiral vehicle ramp to the parking garage, photographed in 2012 Spiral vehicle ramp to the parking garage, photographed in 2016 Spiral vehicle ramp to the parking garage, photographed in 2007

Antennas

Antennas and the top of the building, photographed in 2009

Since its completion, the tower has been topped by two antenna structures. These antenna superstructures support a large number of broadcast antenna equipment. At the time of the tower's completion, both antenna structures were 350 feet (110 metres) in height, and RCA^{[clarification needed]} had given the architects of the building an estimate that 700 feet of antenna structure would be required to accommodate all of the city's radio and television stations. In 2002, the eastern antenna tower was extended to a height of 378 feet (115 metres) in order to enable WBBM-TV to add new digital antenna equipment at a height greater than the roof height of the Sears Tower (Willis Tower). Subsequently, the western antenna tower was reduced to a height of 285 feet (87 metres).^[63]

For a long time, the antenna towers utilized incandescent red lights and a red and white paint scheme to provide a visibility to aviation in compliance with federal regulations. However, in order to forgo the expense and effort of annually reapplying striped paint to the antenna towers, the tower instead installed red strobe lights atop the tower and eliminated the striped paint scheme, as striped paint is not required if structures are topped by such lights.^[63]

A sizable number of television and radio stations utilize the antenna towers. Many stations maintain broadcast equipment on both the John Hancock Center and the Willis Tower's antenna structures in order to have both a primary and backup broadcasting point.^[63]

In November 2012, Boston-based American Tower Corp affiliate paid $70 million^{[lower-alpha 10]} to acquire ownership of the antennas.^[23]

Images of the antennas

John Hancock Center in 1974, with the original striped paint scheme visible on its antenna towers Closeup view of an antenna, photographed in 2009 View of antenna towers in 2022 Antennas photographed in 2015 Antennas photographed in 2016

44th floor sky lobby

44th floor sky lobby, photographed in 2013

The 44th level skylobby is the floor where the building transitions from offices to residential, with offices occupying floors below and residences occupying floors above.^[64]

Swimming pool

On its 44th floor, the John Hancock Center has a resident swimming pool. The pool area has double-height ceilings.^[65]

The pool is the highest pool in the United States when measured by distance above ground level.^[65]

Images of the swimming pool

Pool, captured in 2011 Pool and its south-facing view of the city, photographed in 2016

Resident/office tenant grocery store

On its 44th floor, the building has a 5,200 square feet (480 m²) grocery store accessible only to apartment residents and office tenants. In 2007, operation of the grocery store was taken over by the local Potash chain of grocery stores.^[66] As of February 2023, Potash continues to operate the grocery store.^[67]

See also

• Chicago portal
• Illinois portal
• Architecture portal

• Architecture of Chicago
• List of buildings and structures
• List of buildings with 100 floors or more
• List of tallest buildings in the world
• List of tallest buildings in Chicago
• List of tallest buildings in the United States
• List of tallest buildings and structures in the world
• List of tallest freestanding structures in the world
• List of tallest freestanding steel structures

Footnotes

1. equivalent to $582 million in 2023^[2]
2. equivalent to $411 million in 2023^[2]
3. equivalent to $431 million in 2023^[2]
4. equivalent to $531 million in 2023^[2]
5. equivalent to $46.5 million–$59.7 million in 2023^[2]
6. equivalent to almost $188 million in 2023^[2]
7. equivalent to $92.9 million in 2023^[2]
8. equivalent to $190 million in 2023^[2]
9. equivalent to $51.5 million in 2023^[2]
10. equivalent to $92.9 million in 2023^[2]

References

1. "John Hancock Observatory – At a Glance" (PDF) (Press release). Edelman. 2008. Archived (PDF) from the original on October 9, 2022. Retrieved September 16, 2010.^{[permanent dead link]}
2. 1634–1699: McCusker, J. J. (1997). How Much Is That in Real Money? A Historical Price Index for Use as a Deflator of Money Values in the Economy of the United States: Addenda et Corrigenda (PDF). American Antiquarian Society. 1700–1799: McCusker, J. J. (1992). How Much Is That in Real Money? A Historical Price Index for Use as a Deflator of Money Values in the Economy of the United States (PDF). American Antiquarian Society. 1800–present: Federal Reserve Bank of Minneapolis. "Consumer Price Index (estimate) 1800–". Retrieved February 29, 2024.
3. "John Hancock Center - The Skyscraper Center". Council on Tall Buildings and Urban Habitat. Archived from the original on December 13, 2012.
4. "John Hancock Center". SkyscraperPage.
5. "John Hancock Center". Emporis. Archived from the original on January 19, 2016.{{cite web}}: CS1 maint: unfit URL (link)
6. "John Hancock - Ownership". Archived from the original on March 26, 2016.
7. "John Hancock Center". Emporis.com. Archived from the original on April 15, 2004. Retrieved May 19, 2009.{{cite web}}: CS1 maint: unfit URL (link)
8. p. 422, American Architecture: A History, Leland M. Roth, Westview Press, 2003, ISBN 0-8133-3662-7
9. "The John Hancock Center: 875 North Michigan Avenue, Chicago, Illinois". Chicago Architecture Info. Archived from the original on August 20, 2009. Retrieved May 19, 2009.
10. "John Hancock Center skyscraper losing its iconic name" Archived February 13, 2018, at the Wayback Machine. Chicago Tribune, February 12, 2018.
11. Malooley, Jake (January 30, 2014). "John Hancock Observatory to rebrand as 360 Chicago". Time Out Chicago. Archived from the original on June 16, 2018. Retrieved May 31, 2014.
12. Kuhrt Brewer, Carole. "TILT Chicago: A Thrill Ride One-Thousand Feet in the Sky Atop 360 CHICAGO". Chicago Now. Chicago Tribune. Archived from the original on April 22, 2019. Retrieved April 22, 2019.
13. "360 CHICAGO and BAR 94 Announce Neighborhood Takeover with KOVAL Distillery". Chicago Food Magazine. Retrieved April 22, 2019.
14. "Plan Your Visit to John Hancock Observatory Deck - 360 Chicago". 360 Chicago. Retrieved April 22, 2019.
15. "How Did They Build That? John Hancock Center". Beck Technology. Retrieved October 5, 2023.
16. Jerry Wolman: The World's Richest Man, Joseph Bokol, Richard Bokol, 2012
17. "Poltergeist III (1988) - IMDb". IMDb.
18. Golub Real Estate Investment and Development Archived March 3, 2016, at the Wayback Machine
19. Ori, Ryan (April 20, 2013). "Carving up the Hancock". Crain's Chicago Business. Retrieved July 8, 2016.
20. New owners of Hancock office space plan $45 million rehab. chicagobusiness.com
21. "Boul Mich deck with la view". Crain's Chicago Business. July 18, 2012. Retrieved July 8, 2016.
22. Oberlander, Marissa (July 23, 2012). "Hancock's retail, restaurant space sells for almost $142 million". Crain's Chicago Business. Retrieved July 8, 2016.
23. Oberlander, Marissa (November 21, 2012). "How much for the antennas atop Hancock Center?". Crain's Chicago Business. Retrieved July 8, 2016.
24. Channick, Robert (May 20, 2016). "John Hancock Center shops naming rights to fund plaza redevelopment". Chicago Tribune. Retrieved July 8, 2016.
25. Ori, Ryan (February 13, 2018). "John Hancock Center skyscraper losing its iconic name". Chicago Tribune. Archived from the original on May 22, 2018. Retrieved November 19, 2018.
26. Headliners Higher and Higher Published: 15 November 1981, New York Times
27. "Willis Tower". Archived from the original on March 20, 2012. Retrieved July 4, 2011.
28. "Chris Farley: Trivia". TV.com. CNET Networks. Archived from the original on January 14, 2009. Retrieved April 17, 2008.
29. "Chicago Ghosts". Chicago Hauntings Tours. Archived from the original on July 27, 2018. Retrieved April 17, 2008.
30. "5 Injured in 2-Alarm Fire at John Hancock Building". WMAQ-TV. NBCUniversal Media, LLC. November 21, 2015. Retrieved November 21, 2015.
31. Malagon, Elvia (February 11, 2018). "Car fire at John Hancock Center extinguished without injuries". Chicago Tribune. Archived from the original on November 20, 2018. Retrieved November 19, 2018.
32. "Elevator in former Hancock building fell 84 floors before rescue". WGNTV. Associated Press. November 19, 2018. Archived from the original on November 19, 2018. Retrieved November 19, 2018.
33. "Former Hancock building broken elevator cable never caused 'freefall,' 3rd party inspection report says". ABC7. April 23, 2019. Retrieved January 3, 2020.
34. Liederman, Mack (January 7, 2022). "A Piece Of The Hancock Building Fell Off In 'Freak Incident,' Terrifying Neighbors". Block Club Chicago. Retrieved January 12, 2022.
35. "Twenty Five Year Award Recipients". American Institute of Architects. Archived from the original on November 19, 2016. Retrieved July 3, 2013.
36. Waldinger, Mike (January 30, 2018). "The proud history of architecture in Illinois". Springfield Business Journal. Retrieved January 30, 2018.
37. "25 Must See Buildings in Illinois". USA Today. August 9, 2017. Retrieved January 30, 2018.
38. John Hancock Center "Contractor & Vendor Rules and Regulations, June 2013" Archived March 4, 2016, at the Wayback Machine
39. Fire Sprinkler Times "Residential Floors of John Hancock Center Not Protected With Fire Sprinklers" Archived August 24, 2017, at the Wayback Machine
40. "Asian Skyscrapers Dominate A New List Of The World's Fastest Elevators". Business Insider. Retrieved September 26, 2017.
41. "Plan Your Visit". 360 Chicago. Archived from the original on January 17, 2015. Retrieved January 16, 2015.
42. "History of the John Hancock". 360 Chicago. Archived from the original on March 4, 2016. Retrieved January 16, 2015.
43. "Cafe at 360 Chicago". 360 Chicago. Archived from the original on October 14, 2018. Retrieved April 22, 2019.
44. "Chicago's John Hancock Observatory Launches Skating in the Sky". Crave Local. February 27, 2013. Archived from the original on March 20, 2023. Retrieved March 20, 2023.
45. "Skating In The Sky: Hancock Center Offers An Ice Skating Rink On The 94th Floor". HuffPost. December 28, 2010. Retrieved March 20, 2023.
46. Tamboer, Andrea (December 29, 2010). "Chicago's John Hancock Center opening 94th floor skating rink". mlive. Retrieved March 20, 2023.
47. "TILT". 360 chicago. Archived from the original on January 18, 2015. Retrieved January 16, 2015.
48. Vettel, Phil (June 25, 1993). "Hancock's the 95TH Signs Off On Signature Room Beginning July 9". Chicago Tribune. Retrieved September 29, 2023.
49. Ravenstel, PeterOc (October 3, 2019). "The Views Still Stun at the Signature Lounge". Chicago Magazine.
50. "Signature Room on 95th floor of former Hancock building abruptly closes". NBC Chicago. September 28, 2023. Retrieved September 29, 2023.
51. "Signature Room at the 95th". www.chicagoreader.com. Chicago Reader. n.d. Archived from the original on August 21, 2017. Retrieved August 20, 2017.
52. Keller, Brennan (April 4, 2023). "Iconic Signature Room listed for sale". Chicago Star Media.
53. Washburn, Kaitlin; Funk, Isabel (September 28, 2023). "Skyscraper heartbreaker? Romantic Signature Room atop former Hancock Center closes due to 'severe economic hardship'". Chicago Sun-Times. Retrieved September 29, 2023.
54. Ewing, Tia; Duly, Maggie (September 28, 2023). "The Signature Room, iconic Chicago restaurant, closes doors for good". Fox 32 Chicago. Retrieved September 29, 2023.
55. Channick, Robert (May 20, 2016). "John Hancock Center shops naming rights to fund plaza redevelopment". Chicago Tribune. Retrieved February 21, 2023.
56. "John Hancock Center Chicago". Benihana. Archived from the original on July 17, 2009. Retrieved May 19, 2009.
57. Ori, Ryan (July 22, 2019). "Best Buy closing store in former John Hancock Center, creating another Mag Mile vacancy". Chicago Tribune. Retrieved February 21, 2023.
58. Kamin, Blair (January 17, 1999). "Plain and Simple, Hancock Rules". Chicago Tribune. Retrieved February 21, 2023.
59. "Pools, Fountains, Greenery Creep Into Chicago Business District". Chicago Tribune. March 16, 1969. Retrieved February 27, 2023 – via Newspapers.com.
60. Joravsky, Ben (November 3, 1988). "The John Hancock Center Atrium: Are the owners trying to fix something that ain't broke?". Chicago Reader. Retrieved February 21, 2023.
61. "Landmark status could delay Hancock Center renovations". www.bdcnetwork.com. Building Design + Construction. July 15, 2015. Retrieved February 21, 2023.
62. "Hancock Center Garage". Show and Tell. www.chicagoobservations.com. June 2, 2017. Retrieved February 21, 2023.
63. Gunderson, Erica (May 23, 2018). "Ask Geoffrey: What's Up With These Mismatched Tower Toppers?". WTTW News. Retrieved March 20, 2023.
64. "The City: Above the Hurly-Burly". Time. April 2, 1965. Retrieved February 21, 2023.
65. Spula, Ian (December 15, 2011). "Harbor Point v. Hancock: Who's Got the Edge in Indoor Pools?". Curbed Chicago. Retrieved February 21, 2023.
66. Boss, Donna (October 22, 2007). "Potash Opens a Store With a View". Supermarket News. Retrieved February 21, 2023.
67. "Locations | Chicago". Potash Markets. Retrieved February 21, 2023.

The Cloudbase Chronicles, Life at the Top - An engineers Tale by Harry W. Budge III^[1]

External links

• Official website
• 360 Chicago, formerly Hancock Observatory
• 875 North Michigan Avenue on CTBUH Skyscraper Center
• "875 North Michigan Avenue". Emporis. Archived from the original on January 19, 2016.{{cite web}}: CS1 maint: unfit URL (link)
• John Hancock Center at Structurae
• John Hancock Center
• Society of Architectural Historians SAH ARCHIPEDIA entry on John Hancock Center

Records
Preceded by Richard J. Daley Center	Tallest building in Chicago 1969–1972 1,128 ft	Succeeded by Aon Center
Preceded by Prudential Tower	Tallest building in the United States outside of New York City 1969–1972 1,128 ft

1. Outskirts Press 2010