Small teepee-like houses built for TB patients have become sheds, studios, and bus stops around Colorado Springs.

While most of the games in this arcade take quarters, that would have been a small fortune when they were made.

The haunted reputation of these abandoned Colorado train tunnels is probably not helped by the terrifying spiked fence.

These faux-cliff dwellings allow visitors to climb around on a replica archaeological site.

This Colorado hiking trail provides a small gold mine of abandoned gold mines.

Thanks to a quirk of elevation this gift shop produces magic doughnuts that are found nowhere else on Earth.

This spectacular track has run continuously since 1882.

The highest bridge in America was built for an almost unnervingly small amount of money.

Hidden beneath a bridge, this waterfall is known for the large amounts of graffiti painted on its base.

Strange red rock formations that have been attributed to a higher power for hundreds of years.

The largest self-built castle in the U.S., six decades in the making.

The largest underground pedestrian tunnel system in the U.S. mostly caters to the people working in the offices above, but provides a great, air-conditioned way to traverse the city.

The only airport with a people mover system designed by Walt Disney Imagineering.

A city park that sits on top of a freeway.

A few times a day, you can see an animatronic cowboy shoot-out.

Controversially claiming the title of world's biggest bass drum, UT's Big Bertha was once made radioactive by the Manhattan Project.

The bridge continues the legacy of President Franklin D. Roosevelt's New Deal policy.

Some of the best pastries in "the Czech heritage capital of Texas" come from a gas station off I-35.

The world's tallest statue of an American hero.

This strategically-placed fountain creates the magnificent illusion of mustangs galloping across a river.

Witness to many historic moments in early Texas history.

Established in 1925, Kiddie Park claims to be the oldest amusement park in the U.S. - a cozy little time warp nestled in a shady corner of the modern world.

Official museum, hall of fame, and repository of the Texas Rangers.

Texas's oldest bakery serves authentic German pastries, including legendary strudel.