This prison-turned-museum is a remnant of the Old West's grizzly, violent past.

A fake mine that was made using real mining techniques which is also used as a community center.

When ecosystems collide in the arid Southwest.

A century-old cabin off of Highway 30 touts an unusual construction material: dinosaur bones.

The site where a nuclear bomb was lowered over 8,000 feet underground and detonated as an experiment in natural gas extraction.

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

Hidden high on a remote mountain peak is a humbling and mysterious Vietnam War memorial.

A futuristic hovertrain is parked unceremoniously alongside a nondescript road.

Community owned and operated, this property is home to a diverse set of nudists.

A mental health hospital dating back more than 139 years, now features a museum.

A little-known hot spring haven right below the highway.

This naturally-sourced hot spring is now home to a clothing-optional resort.

Crystal clear lake with a shoreline of travertine located in a Colorado canyon.

Silver in the hills led to the speedy creation of this boom town and a lack of it saw the town abandoned nearly as quickly.

See six states, pickled freaks, rocks, and antiques.

The superstar of Cold War nuclear bunkers has been featured in countless films but is now barely operational.

At the tallest peak in Colorado, an electrifying mix of thin air, lightning, and rivalry.

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

This grand stone tower was dedicated to a famed American humorist almost by coincidence.

This Boeing KC-97 tanker is now a restaurant for aviation lovers.

Wondrous sandstone hoodoos where Native Americans collected clay for pottery, 9,000 years ago.

A lively annual event in which thousands of people race to push coffins heavy with bodies up a hill.

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

This super steep hike ascends 2,000 feet in less than a mile.