Washington: Hirshhorn Sculpture Garden
The Hirshhorn Museum and Sculpture Garden is an art museum beside the National Mall, in Washington, D.C., the United States. The museum was initially endowed during the 1960s with the permanent art collection of Joseph H. Hirshhorn.
The museum and garden complex was designed by Gordon Bunshaft (1909–1990) and provides 60,000 square feet (5,600 m2) of exhibition space inside and nearly four acres outside in its two-level Sculpture Garden and plaza.
Source: Wikipedia.