The Freer Gallery of Art and the Arthur M. Sackler Gallery form the Smithsonian Institution's national museums of Asian art in the United States. The Freer and Sackler galleries house the largest Asian art research library in the country and contain art from East Asia, South Asia, Southeast Asia, the Islamic world, the ancient Near East, and ancient Egypt, as well as a significant collection of American art. The gallery is located on the south side of the National Mall in Washington, D.C., contiguous with the Sackler Gallery. The museum is open 364 days a year (being closed on Christmas), and is administered by a single staff with the Sackler Gallery. The galleries are among the most visited art museums in the world.