I got a chance to tour the USS Alabama when I was 6, right after it was opened as a museum ship in 1965. My Dad was stationed in AL at the time, so we jumped in the car and headed down to Mobile. Unlike today's memorial park, it was a gravel parking lot with two gangways built from railroad ties and a plywood "booth" they sold tickets out of. All I remember was how massive the ship was, the fact that they had a 40 mm mount that people could mess around with, a diorama of a task force with model ships and a main gun shell on the deck. But you could go to the bridge, the CIC and see the captain's cabin, but you couldn't go too far belowdecks.