Old Tucson Studios is what I would call a movie set turned theme park. Started in 1939 as the set for the film "Arizona", Old Tucson Studios has seen the filming of many western themed movies and television shows including "Rio Bravo", "El Dorado", "Tombstone", and episodes of "Little House on the Prairie". Unfortunately, in 1995, a terrible fire destroyed a good part of the studios orginal buildings. While they have rebuilt, a lot of the history is gone forever. Now it seems the focus of the studios is more on the theme-park aspect.
One can view all of the actual bulidings and facades. They all have plaques posted descibing what was filmed at each building. Your admission also includes the viewing of several shows and tours. For example, there is a miniature railroad tour which takes you around the perimeter of the park, a park highlights tour which describes the film history and several stunt shows performed throughout the day. In addition, there are other activities such as a shooting gallery, haunted mine tour, and old-time carousel.