Locations and Hours

Requirements to enter any of our buildings: Government-issued photo ID such as a driver's license or passport. No reservations required.

National Academy of Sciences Building

2101 Constitution Ave., N.W., Washington, D.C.
Hours: 9 a.m. to 5 p.m. on weekdays. Closed weekends and holidays.

Keck Center

500 Fifth St., N.W., Washington, D.C.
Hours: Lobby accessible to the public 9 a.m. to 5 p.m. weekdays. Closed weekends and holidays.