Places Andrea IX Wants to Go

A spectacular cave and a beguiling lake.

A tiny microvalley etched into the side of Knocknarea Mountain hides another world.

A small island less than half a mile from Venice is a forbidden island with a dark and twisted past.

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

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

The world's largest collection of witchcraft regalia.

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

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

The hidden "ballroom" under a mansion lake was built by a criminal who ate a cyanide pill during his trial.

An eerie, derelict amusement park in Berlin.

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

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

A fiery crater has been burning in the Karakum Desert since 1971.

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

A church of bones, decorated with 40,000 human skeletons.

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

The ghost town left by the worst nuclear disaster of all time is being taken over by nature and urban explorers.

This astonishingly geometric cave has inspired everyone from Jules Verne to Pink Floyd.

Skeletons dressed in extravagant 18th century royal costumes cavort in the aisles of this German basilica.

The burning of this 12th-century church kicked off a campaign of Norwegian Black Metal terror.

An intricately carved Viking church overlooks a glistening fjord.

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

An acoustic anomaly with a mysterious cause sits in the heart of Tulsa.

Where dogs like the rare "Fire-Tailed Border Cocker" run free on the mountainside.