A roaring, awe-inspiring double cascade of icy water flows through woodland Oregon like something out of a Tolkien novel.

A tour of underground Berlin takes you through WWII air raid shelters and tunnels used to smuggle people out of East Germany.

Try not to get slimed in Tribeca.

The world’s oldest and biggest bookstore stocking only mystery, crime fiction, espionage, and thrillers.

An Italian crevasse filled with abandoned buildings gives visitors a look at the world without humans.

It should come as no surprise that the best view of the Hollywood sign is from Batman's lair.

A giant Troll lurks under one of Seattle's oldest bridges.

The history of occult science is turned into a creepshow at this lurid Prague tourist attraction.

France's most famous cemetery, with some of its most curious tombs.

This dramatic landscape hidden on the Isle of Skye looks as though you've stepped into the magical realm.

A bizarre house filled with an astounding array of collections.

The only structure left with direct ties to the Salem witchcraft trials of 1692.

This shop and gallery is a modern-day cabinet of curiosities, unassumingly positioned along an urban thoroughfare.

A 140-year-old castle with underground caves hidden in San Francisco.

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

These remote Florida islands have a history of sea turtles and sunken treasures, and one of the world's largest coastal brick fortresses.

These fantastically named natural pools look like something out of a Scottish myth.

Dramatic river bend surrounds a natural red-rocked pedestal.

This jaw-dropping 19th-century bridge uses its reflection to form what appears to be a perfect circle.

A treasure trove of artifacts, books, and artwork from the "golden age" of exploration.

The mysterious, fantastical woodland inspiration for "The Lord of the Rings."

An immersive environment that is part haunted house, part choose-your-own-adventure, and part jungle gym.

The sound of swaying stalks in this stunning grove has been named a governmentally recognized sound.

An eerie, derelict amusement park in Berlin.