Pictures 1 and 2: The shipbuilders often built a very large scale Lucite model of the ships. This one was built for the Navy Bureau of Ships when the ships of this class were still under construction.
Pic 3 and 4: You are looking down from the hanger deck down to bottom recesses of the ship where the main repair shops were located. The service elevator was removed and a thick glass covering was put in place. I hope that in the future, these shops will be opened up as part of the tour.
Pics 5, 6 and 7: The elevator. The capacity and cycle times of the elevators dictate the operations tempo on board. As such, they are quite impressive.