The Cathedral of Learning is a 42-story skyscraper that serves as the centerpiece of the University of Pittsburgh's (Pitt) main campus in the Oakland neighborhood of Pittsburgh, Pennsylvania. Standing at 535 feet (163 m), the 42-story Late Gothic Revival structure is the tallest educational building in the Western Hemisphere and the second-tallest university building in the world, after the main building of Moscow State University. It is also the second-tallest gothic-styled building in the world, after the Woolworth Building in Manhattan. The Cathedral of Learning was commissioned in 1921 and ground was broken in 1926 under general contractor Stone & Webster. The first class was held in the building in 1931 and its exterior finished in October 1934, prior to its formal dedication in June 1937. It is a Pittsburgh landmark listed in the National Register of Historic Places.