The Bandai Museum is located in Mibu, Shimotsuga District, Tochigi, Japan. The images below are at the courtesy of 1/200maniax san. (His link is HERE)
Originally, it was at Matsudo, Chiba, but it was closed in 2006. I had the opportunity to visit it before it closed that summer. And it was great! Before the 1:1 Gundam ever graced the earth, the Bandai Museum's Gundam Museum was the wildest thing I ever saw. And being able to put on a cosplay costume of a regular Feddie's uniform and took a close up with the 1:1 Gundam bust was well worth the admission price.
My August trip to Japan is coming up fast....but I don't think if I would have a time to visit the new Bandai Museum. I would probably only go see the 1:1 Gundam in Shizouka.