Montana Museum of Railroad History
The longer you look at the dioramas on display, the more fun details you will find! The whole museum is a "Where's Waldo?!" experience! (In fact, Waldo is hiding at the State Fair mini-scene - can you find him?!) There is a drive-in movie, moving threshers in a field of wheat, a welding crane that has sparks, and even a UFO hiding in the trees.
The young at heart will find many fun surprises including skinny-dipping sisters with rascal little brothers, mountain goats perpendicular to the rocky hillsides and even a replica of Our Lady of the Rockies. The easiest time to visit is during the state fair in late July/early August, but its open most Saturdays during the summer as well. In addition, there's a caboose outside with surprises, and memorabilia from decades of rail history!