An antique narrow gauge railway line still running through the Colorado and New Mexico mountains.

Neal Cassady may still have an open tab at one of Denver's oldest watering holes.

A downtown park built on top of unclaimed graves.

The childhood home of Henry Jones Jr. is now an adventure-themed bed and breakfast.

Gleaming self-built castle towers made from beer cans and inspired by "Vitamin Mary Jane."

The Denver airport is guarded by a 32-foot-tall sculpture of a demonic horse.

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

Paranormal experiences in this hotel's room 217 led Stephen King to write "The Shining."

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.

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

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

There are eight natural springs around town, each with a slightly different taste.

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

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

The only arched bridge made of stone on the entire Mississippi River.

Secret hideaway for an alternative beach experience.

The Midwest's reigning king of surplus stores is full of nothing you need and everything you want.

This bright yellow building is packed with sweet treats from all around the world, from chocolate-covered crickets to whoopie pies.

Equal parts record-breaking temple to consumerism and bizarre fun park, it's more than you think it is...

Home to the Amorphophallus titanum "Corpse Flower," which is among the largest flowers in the world and also smells powerfully of rotting flesh when in bloom.

Enter the Forest of the Elves.

A toweringly silly piece of modern art has been delighting locals since the 1980s.

The world's largest mountain carving could fit all of Mount Rushmore inside it many times over.