Enid A. Haupt Garden owned by Smithsonian Institution
The Enid A. Haupt Garden is a 4.2 acre public garden in the Smithsonian complex, adjacent to the Smithsonian Institution Building (the "Castle") on the National Mall in Washington, D.C.  It was designed to be a modern representation of American Victorian gardens as they appeared in the mid to late 19th century.  It replaced an existing Victorian Garden which had been built to celebrate the nation's Bicentennial in 1976.