One of his best-known thin-shell concrete structures in America is the Kresge Auditorium at MIT. Another thin-shell structure is Yale's Ingalls Rink, which has suspension cables connected to a single concrete backbone and is nicknamed "the whale". His most famous work is the TWA Flight Center, which represents the culmination of his previous designs and his genius for expressing the ultimate purpose of each building, what he called the "style for the job". In 2019 the terminal was transformed into the TWA Hotel.