Below is a QuickTime VR movie. You can click on it with your cursor and move your viewpoints by dragging the mouse. What you will get is a 3600 tour of the 4p vault with the 4p detector, the forward array, the beam stop, Gary Westfall sitting at a computer, the electronics racks, another computer, a vacuum vessel, and Wolfgang Bauer standing in front of yet another terminal, staring at some connectors. (You can also use your keyboard's arrow keys to navigate on some computers).
You can also zoom in by (at least in Netscape on the Mac) pressing the option key, and zoom out by pressing the control key. On a Windows machine, you can accomplish the zooming with the shift and control keys.