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

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

A 300-year-old tea shop that brought tea to the English people, not to mention the Queen herself.

The crypts of Capuchin friars decorated with the bones of over 4,000 friars, including an entire "crypt of pelvises."

A whimsical and twisted animatronic monster tour beneath the streets of Berlin.

This 1,300 year old monastery built atop a single rock was once only accessible depending on the whims of the tide.

The world's only museum devoted to the wonders of fluorescence.

A 16th-century horror show built in a lovely Italian garden.

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

The sign at the garden gate reads: "These Plants Can Kill."

This faux-seedy Japanese arcade is made up to look like a maze of alleys straight out of a cyberpunk dystopia.

The fairy tale castle of the "fairy-tale king."

One of the few remaining casualties of the London Blitz, this destroyed church has become an enchanting public garden.

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

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

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

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

The macabre collection of Jacques Sirgent, an expert scholar on the undead and all of their trappings.

A magical place that lets you play in and explore the world of Studio Ghibli.

On Japan's Tashirojima Island, cats are king.

Non-profit time travel mart sells goods you would need for a trip through the fourth dimension.

London's creepiest cemetery was once the site of dueling magicians and mobs of stake-carrying vampire hunters.

La Monte Young and Marian Zazeela's "Dream House" will immerse you in an ever changing world of sound and light.

The vast, legendary catacombs hold secrets much stranger than stacked bones.