Bizarrely shaped rock formations in northwest Bulgaria come with equally bizarre legends.

Caves famous for the dragon-slaying saint who lived there.

A cave dwelling that was started by the Celts, expanded by monks, and finished by knights.

This Tibetan monastery has survived multiple attacks and is also a sky burial site.

A Zoroastrian funerary tower where excarnation rituals are carried out is threatened by the area's dwindling vulture population.

The ruins of an ancient Zoroastrian Tower of Silence believed to be the earliest example of the traditional funerary practice.

This massive underground salt mine now holds a sci-fi theme park in its depths.

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

A self-built mosaic house and sculpture park.

Victorian "Fancy Craft" Hair Wreaths and Relics.

Hollowed out cedar log tubs set in an ancient towering forest.

Venue for strange sideshow displays and musical acts.

The only theatre in the world constructed specifically for sound movement.

This morbid, delightful curiosity shop offers everything from animal bones to human teeth.

A tiny theater hidden in an alley plays a constant stream of short silent films for anyone willing to peer through the peephole.

A collection of oddities including Dr. Kevorkian's suicide device, the Thanatron.

An Amsterdam street lined with antique shops each one dedicated to a different obscure collection.

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

This shop specializes in oddities and Victorian-inspired wonders.

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

This Boston medical museum features the skull of the famous medical case of Phineas Gage.

This whimsical Oz-themed park had a wonderful impact on the surrounding neighborhood.

Medical and zoological curiosities for sale.

This futuristic German spa allows visitors to float in a pool of salt water while zoning out to underwater techno.