My dad starting taking me up there to the museum when I was little and I worked at APG during the 80s. They have an amazing collection but back in the 90s some nitwit decided to trade their King Tiger (one of only a handful still in existance) to Fort Knox for a Soviet T-72. We had 4 T-72s at our shop back in the 80s. You can find them laying around in the tall grass. Morons. They also sent their Tiger 1 to Germany for restoration back in the 90s and the last time I was there is still was not back. There is still lots of interesting stuff there but their two best tanks are gone. If you are into guns they have more than just about anyone else. To their credit, the Patton Armor museum at Fort Knox has completely restored the King Tiger which had some of it's side armore removed in the 50s for display purposes. It has been repainted in it's original colors from when it was in service in SS PzAbt 501 with Kampfgruppe Peiper during the Ardennes offensive.