In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

Watch the newest land on the planet form before your eyes.

A beach made of semi-precious green sand on the Big Island of Hawai'i.

Earth's tallest volcano is sacred to Native Hawaiians, and home to a dozen world-class observatories.

An apocalyptic seismic event creates a deadly chain reaction that ends with a 6-mile long lake developing within weeks.

A beautiful geyser under environmental threat.

One of nature's most well-scheduled phenomenons resides in Wyoming's Yellowstone National Park.

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

A town filled with hot chocolate, dazzling lights, and lots of Christmas cheer.

Native Americans built this circle of stones, which was used to predict astronomical events.

Wall to wall taxidermy at Denver's oldest and most exotic steakhouse.

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

The Denver airport is guarded by a 32-foot-tall sculpture of a demonic horse.

Devilish landscape, once cinema home to giant alien bugs, now derelict roadside attraction.

The remote outlaw hideout of Jesse James, Butch Cassidy, and the Sundance Kid.

The first declared National Monument in the United States.

The world's largest mountain carving could fit all of Mount Rushmore inside it many times over.

A place where the laws of nature seem to have gone completely berserk... but of course haven't.

Every president in history is immortalized in bronze in downtown Rapid City.

The farthest you can be in the contiguous U.S. from a McDonald's location.

The granddaddy of all tourist traps, built on ice water, jackalopes, and a giant dinosaur.

A fitting attraction for the corn capital of the world.

Three columns of volcanic rock shoot out of the ocean.

Medicinal spa created with the discharge from a geothermal energy plant.