Fort Sam Houston Quadrangle and Museum, San Antonio

About Fort Sam Houston Quadrangle and Museum

The Fort Sam Houston Museum tells the story of Fort Sam Houston from its beginning in 1845 as the Post at San Antonio through the present day, tracing connections to the Spanish presidio of 1718. Visitors explore artifacts, images, and stories documenting how a small Post and quartermaster depot transformed into one of the nation's major military installations. The museum highlights the close relationship between the Post and San Antonio, known as Military City, USA. Housed in a historic building on the Fort Sam Houston grounds, the museum features exhibits on military heritage, the post's evolution, and its significance to regional defense. Access requires entering through the Walters Street gate north of Interstate 35. Visitors without Department of Defense identification must stop at the Visitor Center on Walters Street, and all visitors 18 and older must present a picture identification card.