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.

Requirements: Photo ID and proof of up to date COVID-19 vaccination. No reservations required.

For more information about current COVID-19-related vaccination requirements and our operating status, please visit this webpage.

Directions to the NAS Building

NAS Building Visitor's Guide

The Einstein Memorial Visitor's Guide

NAS Great Hall Website

Keck Center

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.

Keck Lobby Brochure