Changes of command at Ft. Huachuca are pretty cool. Brown Parade Field is the old ceremonial field in the center of the original part of the post and is surrounded by the original garrison housing and the old barracks that housed the 4th Cavalry Regiment during the Apache Wars.
http://huachuca.army.mil/pages/btroop/history.html
and the Ft Museum w/ displays of the old Cav. Uniforms & equip. (Non Hollywood style).