An alchemist's "magic door" stands in the middle of a Roman park.

Rustic natural hot springs in the deciduous rain forest.

Better known as the "Body Farm," this unique research facility has been studying how human bodies break down since the 1980s.

This lab's maddening silence is good for business but bad for sanity.

Experience park where visitors are told to expect the unexpected.

A whimsical village of unique treehouses resides in a Washington forest.

This 700-year-old street food market features baby octopus and soy donuts.

Hundreds of glow-in-the-dark objects light up a museum in a historic zinc mine.

A Jenga-style cylindrical tower of books that appears to go on forever.

This futuristically sylvan church is a glass-enclosed marvel of modern architecture.

Countless grotesque faces stare out from this eerie Prague art wall.

A surreal museum of extraordinary industrial objects.

A museum dedicated to the alleged Roswell Incident.

The curiosities and wonders of pharmacy in a delightful historic building.

Giant, natural amphitheaters made of delicate geological formations called "hoodoos."

Every autumn, this hillside is ablaze with red summer cypress.

Wild lights and sound effects turn a walk through some caves into an eye-popping 1960s tourist attraction.

Once the most densely populated place in the world, this island is now a ghost town.

This natural wonder drops 16 stories straight down through rare flora and streaming waterfalls.

This geothermal hot spring hides beneath a slowly growing mineral dome.

The world's longest known cave system.

A stunning, two-tiered waterfall made famous by poets, artists and the legend of a ghost dog.

A lovers' beach, tucked below the surface of the island, provides a safe haven for romance.

Staves, storm-calling, and of course, necropants.