This open-pit mine is now an abandoned symbol of Bisbee's copper-mining heritage.

This prehistoric karst cave is situated near a working ranch and historic warm springs.

An immense cave that has served as an outlaw's treasure trove, an underground dance hall, a nuclear fallout shelter, and much more.

The natural history of Utah is on full display inside this museum.

This pristine World War II airfield gives a comprehensive look at atomic development and aviation history.

A professional special effects makeup artist’s collection of horror creatures and one-of-a-kind recreations on display in downtown Boulder City.

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

Once a lonely sentinel on the edge of the Great Plains, this rebuilt trading fort offers a glimpse of life on the Santa Fe Trail.

Concrete igloos standing across from what remains of the Michigan Central train depot.

This former wildlife sanctuary is being transformed into an art park.

These 100-year-old tunnels in downtown Provo house artists, restaurants, and a few surprises.

A luxurious doomsday bunker hidden beneath an unassuming Las Vegas home offers the best of subterranean suburbia.

Some call this eerie forest of crooked trees the "Bermuda Triangle of Romania."

The biggest pinball arcade in the world has over 600 pinball machines, and 300 arcade machines.

This massive home was constructed by one of the greatest conservationists in Colorado history.

Even in death, he's still your huckleberry.

This interpretive path lets you get up close and personal with dinosaur bones.

A memorial dedicated to the victims of the Columbine High School shootings.

An impressive collection of over 50,000 minerals including moon rock from the Apollo 17 mission.

The largest dinosaur trackway in North America is tucked away among this canyon's ghosts and archaeological gems.

While comics are the main attraction at this megastore, the second floor plays host to an exhibit fit for a museum.

At this Denver landmark, the meals are compulsory, the sopapillas are complimentary, and the insanity is everywhere.

A Lovecraftian altar of nightmarish bronze chairs sits ominously on a boardwalk in Puerto Vallarta.

The last moments of the ill-fated Pompeiians, frozen forever in plaster.