The ruins of this medieval castle in Northern Ireland have inspired artists from C.S. Lewis to Led Zeppelin.

Local legend says there's treasure hidden within its crowded graveyard.

This Italian-style temple replica has been threatening to fall off the Irish coast for hundreds of years.

It is said a heartbroken man visited the gap every day to stare blankly out at the sea.

The ruins of a once-grand mansion in Northern Ireland are now thought to be haunted.

The atmospheric road was never meant to be so creepy.

A wooden dock art installation on Chiloé Island taps into the island's indigenous mythology.

This Turkish cave boasts some rather bizarre associations with the King of Mount Olympus.

A geological wonder shrouded in myth.

Flames have been burning within this mountain for more than 2,500 years.

This ancient Irish landscape boasts hundreds of legendary ruins.

Along the most northwestern point in Africa is an ancient cave surrounded by legends.

The filming location of a shark attack in Steven Spielberg's famous shark movie.

The lighthouse central to the 1980s horror classic "The Fog" is, in fact, located in one of the foggiest areas of the Pacific Coast.

Colorado's only active volcano last erupted around 4,000 years ago.

See 150 million-year-old dinosaur tracks and bones dating back to the Jurassic period.

A glimpse of a waterfall is reached by a steel catwalk along a slot canyon located in an Ouray city park.

Located in the world's highest-altitude Dark Sky Community, this observatory welcomes amateur and professional astronomers alike.

This remote Colorado canyon is home to the second-largest collection of natural arches in the world.

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

This once-popular otherworldly landscape was formed by one of the largest volcanic eruptions in history.

At the tallest peak in Colorado, an electrifying mix of thin air, lightning, and rivalry.

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

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