Steaming blood-red hot spring from hell.

The world's toughest modern Christian pilgrimage leads directly to the gates of Hell.

A deadly ancient portal to the underworld.

Hellam Township is reputed to feature seven remote gates, which when passed through in the right order, open an entrance to hell.

Sparkling, calcite-covered skeletons of children who may have been sacrificed to appease an angry god.

According to one local tradition, the entrance to the Voodoo underworld can be found in New Orleans through seven gates scattered throughout the city's French Quarter.

A mysterious chasm in the heart of the ancient Roman Forum, the Lacus Curtius was once believed to be a gateway to hell.

The ancient settlement attracts tourists from all over looking to learn about the Chinese vision of the afterlife.

A stratovolcano located in the south of Iceland, with a long history of charted activity and a rich mythology attached.

A cave network located at the southernmost tip of mainland Greece was once believed to be an entrance to Hades.

Crumbling hotel echoes with the sounds of the '30s.

What is the Thing?

Traveling this mountain pass reveals quaint stone buildings, stunning Irish scenery, and a bridge said to grant wishes.

A Tucson museum and performance space full of found-object movable sculptures.

This small-town Connecticut restaurant gives each diner a free book from its vast library.

This magical space partly designed by Antoni Gaudi is one of the best examples of romantic gardening in the Mediterranean.

A strange rock with a sinister reputation lurks within the crimson waters of this Scottish glen.

A fifth-century temple improbably built into the side of a cliff.

This legendary "evil" doll has been haunting the citizens of Key West for over 100 years.

The highest lighthouse in Scotland shines from an abandoned island.

Thirty creepy ghosts now inhabit this decaying 14th-century church.

This folk art compound was built by a fortune teller on the advice of three people from the future.

One of the oldest used bookstores in the U.S. has been selling antiquarian treasures since 1825.

A meandering boardwalk across the bogland leads to a "stairway to heaven" with sublime views.