Locations and Hours
National Academy of Sciences Building
2101 Constitution Ave., N.W., Washington, D.C.
Hours: 9 a.m. to 5 p.m. on weekdays. Photo ID required. Closed weekends and holidays.
Directions to the NAS Building
NAS Building Visitor's Guide
Prior to visiting the NAS Building, download the free NAS Great Hall Dome Explorer iPad App from iTunes. Don't have an iPad? You can check one out during your visit from the NAS Building security desk. You will need to leave a government issued photo ID with security.
500 Fifth St., N.W., Washington, D.C.
Hours: Lobby accessible to the public 9 a.m. to 5 p.m. weekdays. Photo ID required. Closed weekends and holidays.
Directions to the Keck Center
Keck Lobby Brochure