There is also a Patton Museum at Ft. Knox in Kentucky.
Some wonderful examples of armor from WW1 thru present day.
I spent some time drooling over the mauser anti tank rifle in the WW1 room.
Actually I think most of the armor has been moved to a museum at Fort Benning, and all that is left at Fort Knox is the Patton memorabilia.
http://www.armorcavalrymuseum.org/News-Update.html
http://www.military.com/military-report/new-armor-and-cavalry-museum
Looks like the armor has been moved to Benning, but the new museum is still under construction?