National Museum of Military Vehicles

Dubois, Wyoming

Over 450 tanks, jeeps, and landing craft, all restored. It's "the world's largest private collection," supposedly America's largest mass of military rolling stock outside of the armed forces. The museum has 140,000 square feet of space and cost owner Dan Starks $100 million.

Huge murals depict the manufacturing juggernaut of military weapons that helped win World War II. A walk-in "Unknown Soldiers Weapons Vault" displays hundreds of guns, including the one that fired the first shot in the Revolutionary War.

Starks began his collection with a single broken-down WWII Sherman tank, and it spun out of control from there. When reporters asked why he opened the museum out on this relatively unpopulated spot, he answered that this is where he lives, and he wanted to be able to enjoy his stuff.