An abandoned town is hidden in Great Smoky Mountains National Park.

The abandoned train depot now doubles as a well-placed rest stop for those who take the road less traveled.

This former Mormon settlement is reemerging from the receding waters of Lake Mead.

Nearly 300,000 acres of wildlife, natural splendor, and a hidden ghost town have been designated a national monument.

The first railway tunnel to cross the Continental Divide and, at 11,523 feet, was once the highest railroad tunnel in the world.

This massive crater in the middle of nowhere was used to train astronauts for moon landings.

While you're unlikely to find riches here these days, this remote mine is a time capsule of the Gold Rush era.

See Hoover Dam and the bypass bridge from a perspective usually off-limits to the public, and float the upper part of the Black Canyon National Water Trail.

An old railroad grade built for the construction of Hoover Dam is now a recreational trail featuring several tunnels and sweeping views of Lake Mead.

The largest spring in Northwest Arkansas is also home to a sprawling botanical gardens and a historically significant bluff.

The world's only international cryptozoology museum is host to an unrivaled collection of mysterious objects.

Bigfoot prints, Feejee mermaids, and haunted dolls on display in a tiny North Carolina town.

Discovered by a soldier during the Revolutionary War, these springs helped create an iconic South Carolina ginger ale.

"Not too many people can say they've had a nuclear bomb dropped on them, not too many would want to." — Walter Gregg.

A park where you can watch the highway zoom past.

A dramatically eroding canyon thousands of miles from the desert.

A seven-ton black granite monument dedicated to the memory of those who died and those who lived through the 1977 crash of the popular Southern rock band.

An abandoned World War II bunker is part of a chain that runs throughout Washington.

Explore a misty river canyon from a metal bridge system.

One of the world's largest telescopes, stares into the night sky with two huge mirrors.

A small store filled with animal skulls and other curiosities.

A strange mishmash of ruins and abandoned structures hint at the park's many lives.

The remains of this rugged homestead ranch offer a brief glimpse into a bygone era.

Wee (and not so wee) footprints that insects and reptiles of the Paleozoic Era left behind.