Fort McNair was built in 1791, and is the third oldest Army installation in continuous use since the founding of the United States. The other two are West Point and Carlisle barracks, Carlisle, Pa. The installation has been an arsenal, a penitentiary, a hospital, a troop training post, and now a center for higher education.
Joint Base Myer-Henderson, that Fort McNair is part of, created a walking tour brochure that can be found at: http://www.jbmhh.army.mil/web/jbmhh/AboutJBMHH/WalkingTourBrochure.pdf
Each year Joint Base Myer-Henderson holds a quarterly Public Open House of Grant Hall so visitors can access the grounds and see the Grant Hall courtroom and museum.
Click on the gallery link below to see a photo tour with captions of Ft. McNair from August 5.