The Solomon R. Guggenheim Museum, founded in 1937, is a modern art museum located on the Upper East Side in New York City. It is the best-known of several museums owned and/or operated by the Solomon R. Guggenheim Foundation, and is often called simply The Guggenheim. It is one of the best-known museums in New York City. The main part of the building is a very unusual shape, and was designed by Frank Lloyd Wright.