This ornate Victorian marketplace was the setting for Diagon Alley and the Leaky Cauldron in the Harry Potter films.

Hike deep into the woods to explore this Gilded Age masterpiece.

These small, triangular, colorful houses are a staple of Madeira Island.

These slanted cubic abodes are a creative if odd solution to a zoning pickle.

This small museum located under the famous cube houses, is home to some 30,000 chess pieces.

A perilous medieval road leading right into the sea.

Check out the underground party scene at the "Burning Man of Brooklyn."

This former Norwegian sailor's church is slowly being taken over by ramshackle robot musicians.

Underground vaults of a former brewery beneath Brooklyn's Crown Heights are now used to ripen cheese.

A huge musical instrument played by the ocean.

Located in a veterinary school, this macabre exhibit displays the effects of animal diseases.

Ancient stone dildos and other odd pieces of medical history are displayed at this quirky Cyprus gem.

Just your average Marie Antoinette–themed speakeasy in an abandoned 19th-century subway tunnel.

A beautiful and abandoned New York subway station from 1904, complete with chandelier.

One of the only places where Earth’s mantle lies above water.

These eerie outliers of the lightning bug family glow a mysterious blue color.

You can still find treasures on the pebbly beaches of one of the world's oldest jade-producing areas.

This National Natural Landmark is one of the best examples of a “mass wasting” in the world.

An exquisite tunnel of cascading flowers.

Approximately 300 million years ago, a massive coral reef existed in what is now the largest limestone cave in Japan.

This grave in a ghost town cemetery marks the death of a witch on a day that never happened.

Spend the night in this formerly abandoned traditional Scottish village.

A collision of human error and natural geothermal pressure created this rainbow-colored geologic wonder.

The oldest hotel in the world has been operated by the same family for over 1,300 years, even catering to samurai.