Named for its donor, a noted supporter of horticultural projects, this stunning garden presents elaborate flower beds and borders, plant-filled turn-of-the-20th-century urns, 1870s cast-iron furnishings, and lush baskets hung from reproduction 19th-century lampposts. Although on ground level, the garden is actually a 4-acre rooftop garden above the subterranean Sackler and African Art museums. An "Island Garden" near the Sackler Gallery, entered via a 9-foot moon gate, has benches backed by English boxwoods under the shade of weeping cherry trees.

A "Fountain Garden" outside the African Art Museum provides granite seating walls shaded by hawthorn trees. Three small terraces, shaded by black sour-gum trees, are located near the Arts and Industries Building. And five majestic linden trees shade a seating area around the Downing Urn, a memorial to American landscapist Andrew Jackson Downing. Elaborate cast-iron carriage gates made according to a 19th-century design by James Renwick, flanked by four red sandstone pillars, have been installed at the Independence Avenue entrance to the garden.