Explore the largest pure gypsum deposit in the world, and go dune sledding while you're at it.

An immersive environment that is part haunted house, part choose-your-own-adventure, and part jungle gym.

A small metropolis of Pueblo cave dwellings have been carved right into the hillside of this national monument.

A unique geological area spiked with wind-carved rocks that resemble teepees.

These Pre-Columbian petroglyphs contain representations of birds, deer, hunters, and even some early Native flute players.

The 7,000-year-old calcium carbonate formation creates a magnificent natural bridge.

This Shetland Islands bus shelter may be small, but it squeezes in a couch, a desk, some art, and even an old telly.

A remarkably well preserved tower dating all the way back to the Iron Age.

Possibly the oldest of Britain's ancient henges is also one of its most stark.

The true age of this ancient stone circle is unknown, but its stunning vista isn't in question.

A small island abbey is the final resting place of many medieval Scottish monarchs, including the real Macbeth.

Amazing and mysterious Neolithic settlement on Scotland's Orkney Islands.

A church that bred legends, and served as an inspiration for the Da Vinci Code.

Ruined 11th century abbey built by King David I in Edinburgh, Scotland.

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

A small gallery and shop dedicated to an ancient style of hand-printed textile.

An out-of-place slice of France, smack in the middle of Shanghai.

Across the Pacific in a raft, a museum dedicated to Thor Heyerdahl's now legendary expedition.

One of the most breathtaking railways in Europe also takes one of the steepest climbs, from fjord to mountain plateau.

An intricately carved Viking church overlooks a glistening fjord.

Home to three historic ships from the age of Vikings.

Bizarre Hindu and Buddhist sculpture park.

Eat a meal surrounded by bomb fragments.

Believed to have once stored either human remains or rice wine, thousands of mysterious stone jars lie in ruin.