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

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

The moving metal works of one troubled artist can still be viewed on his front lawn... for now.

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

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

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

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

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

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

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

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

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

An enthusiastically interactive mining museum that won't let black lung ruin the fun.

Abandoned silver mine strewn with wrecked and twisted structures.

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

The largest source of fossilized insects anywhere.

The world's largest washing machine collection has more than 1,400 antique items in its exhibit.

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

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

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