The Museum of Modern Art is an art museum located in Midtown Manhattan, New York City, on 53rd Street between Fifth and Sixth Avenues. The institution was conceived in 1929 by Abby Aldrich Rockefeller, Lillie P. Bliss, and Mary Quinn Sullivan. Initially located in the Heckscher Building on Fifth Avenue, it opened just days after the Wall Street Crash. The museum, America's first devoted exclusively to modern art, was led by A.