Once an unstoppable source of gold and silver, this town came to a grinding stop when the groundwater proved deadly.

The wreckage of a World War II bomber is hidden high in the Colorado wilderness.

The final resting place of American icon Buffalo Bill, and a museum that aids in telling his tale.

The world's largest key collection features keys to the White House, Frankenstein's castle, and Hitler's bunker.

Colorado's only true geyser is hidden within the San Juan National Forest.

One of the largest Buddhist stupas in North America is built of concrete designed to last 1,000 years.

Even in death, he's still your huckleberry.

The scene of one of the darkest moments in American labor history has been left essentially untouched since the tragedy.

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

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

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

The world's largest carnivore sanctuary is home to over 450 meat-eating rescues.

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.

Abandoned silver mine strewn with wrecked and twisted structures.

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

This spectacular track has run continuously since 1882.

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

This "zoo" is a cross between a junkyard and a sculpture garden, featuring animals you won't see anywhere else.

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

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

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

The ancient dwellings of the Puebloans, located in the cliffs of majestic mesas.

One of the greatest heroes of the Titanic tragedy came from humble beginnings to this beautiful home.

A striking, menacing sandstone peak towering above a landscape that's equal parts Mordor and the Moon.