Lever House, designed by Gordon Bunshaft of Skidmore, Owings and Merrill and located at 390 Park Avenue in New York City, is a seminal glass-box skyscraper built in the International style according to the design principles of Ludwig Mies van der Rohe. Completed in 1952, it was the first curtain wall skyscraper in New York City, although not the first in the United States.^[3] The 307-foot-tall (94 m) building^[1] features an innovative courtyard and public space.

(description from Wikipedia)