Long before guestbooks and hotels, frontier travelers signed their names on this rock face.

Once thought to be the mysterious work of a witchy prophetess, a well with unusual properties turns objects into "stone".

A spring-fed pool so deep it's used for scuba diving as well as swimming.

An abandoned saucer-shaped monument in the Bulgarian mountains.

The birthplace of both the Atomic Age and Godzilla, and the namesake of the bathing suit.

New Zealand's epic shrine to all things puzzling.

Kings Cross Station pays tribute to its role in Britain's best-selling book series.

The home of the world's first and last remaining "wooly ant."

The seamy, underground secrets of Portland's criminal past.

An emporium for the weird, creepy, rare, and just plain gross.

A 100-year-old purveyor of curiosities, curios, and kitsch featuring mummies, shrunken heads, and a Fiji Mermaid.

A theme park attraction designed to turn your children into LARPers.

A brewery warehouse which doubles as a circus bigtop.

A magically clear, blue river that seems to spring from nowhere.

Since 1874, this macabre collection has developed into a museum devoted to Scotland Yard's mementos of dastardly deeds.

One part local history, 99 parts gruesome haunted house.

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

An institution that preserves the history of institutionalization.

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

New Orleans' famous cemetery, located on the site of a former race track.

This attraction was abandoned after the Chernobyl disaster.

This abandoned amusement park was built on a site with a dark history.

Cold War missile launch site which has been converted to a public park.

In which a local geological marvel becomes a quaint roadside attraction.