The Twenty-five Year Award is an architecture prize awarded each year by the American Institute of Architects (AIA) to "a building that has set a precedent for the last 25 to 35 years and continues to set standards of excellence for its architectural design and significance" and which was designed by an architect licensed in the United States. The Twenty-five Year Award was first presented in 1969, and has been handed out every year from 1971 onward, with the exception of 2018. In 2022, the prize was awarded to the Chapel of St. Ignatius in Seattle, Washington, by Steven Holl Architects.
|Twenty-five Year Award|
|Awarded for||Long-term excellence in American architecture|
|Presented by||American Institute of Architects|
Five buildings in New York City have received the award, the most of any city. Washington, D.C., is second with three, while Boston, Chicago, Los Angeles, and New Haven each have two. Only five buildings outside of the United States have received the award: two in London, England, and one each in Jeddah, Saudi Arabia; Barcelona, Spain; and Paris, France.
Finnish American architect Eero Saarinen designed or contributed to six buildings so honored, tied with the architectural firm of Skidmore, Owings & Merrill. Five buildings have been honored that were designed or contributed to by Louis I. Kahn; four by Frank Lloyd Wright, and three apiece by Ludwig Mies van der Rohe and the firm Pei Cobb Freed & Partners. Of the 53 projects that received this award through 2022, only three had women as contributing architects: the Eames House, the Vietnam Veterans Memorial, and the Sainsbury Wing at the National Gallery.