What is the name of the 4.2 acre public garden in the Smithsonian complex, adjacent to the Smithsonian Castle on the National Mall in Washington?
National Mall The National Mall is a national park in downtown Washington, D.C., the capital of the United States. The National Park Service (NPS) of the U.S. Department of the Interior administers the National Mall, which is part of its National Mall and Memorial Parks unit.
Ladew Topiary Gardens Ladew Topiary Gardens (22 acre ) are nonprofit gardens with topiary located in Monkton, Maryland. The gardens were established in the 1930s by socialite and huntsman Harvey S. Ladew (1887–1976), who in 1929 had bought a 250 acre farm to build his estate. The house and gardens are open April through October, weekdays and weekends; an admission fee is charged.