In the fall of 2006, the Smithsonian Institution installed a Common Wireless Access System to provide extended cellular coverage and free public wireless Internet access for all Smithsonian museums on the National Mall. The system provided cellular coverage to all the museums on the Mall, including areas where it had not been previously possible to receive reception. The cellular system was installed in phases, at no cost to the Smithsonian, beginning with the National Air and Space Museum and the National Museum of the American Indian and was completed at the National Museum of American History when it reopened in 2008.
Free Wi-Fi, public wireless Internet access is available at limited hotspots; and the Castles Great Hall and the Enid A. Haupt Garden (adjacent to the Castle). Outdoor Wi-Fi access at the National Museum of the American Indian plaza and the Hirshhorn Museum and Sculpture Garden. Indoor Wi-Fi HotSpots is available in several museum cafeterias, auditoriums and conference rooms.
See more free Wi-Fi hotspot locations in Washington, DC.