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

This 17th-century street hidden beneath Edinburgh was once a breeding ground for the black death.

High on a hill overlooking Los Angeles lives a world famous, high-power conical Tesla Coil.

Hundreds of lucky felines haunt the ruins where Caesar was murdered.

This jaw-dropping 19th-century bridge uses its reflection to form what appears to be a perfect circle.

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

Remants of foundations, streets, and streetcar tracks inhabit the cliffs where a landslide occurred in 1929.

A miniature rainforest is growing inside of a Midtown Manhattan office building.

A sharp bend in a dramatic river canyon cut through red rocks.

A bizarre house filled with an astounding array of collections.

On Japan's Tashirojima Island, cats are king.

These remote Florida islands have a history of sea turtles and sunken treasures, and one of the world’s largest coastal brick fortresses.

This beautiful building in the heart of Manhattan's Financial District was empty for decades.

This secluded aqua waterfall in the Grand Canyon is the perfect swimming hole, and the Havasupai tribe's fiercely protected natural wonder.

Abandoned railway line circling the city of Paris.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

This dramatic landscape hidden on the Isle of Skye looks as though you've stepped into the magical realm.

The only structure left with direct ties to the Salem witchcraft trials of 1692.

The history of occult science is turned into a creepshow at this lurid Prague tourist attraction.

This massive library holds what was once the largest book collection in the world.

These fantastically named natural pools look like something out of a Scottish myth.

Bring your own cardboard to the slippery slopes of concrete hidden in a neighborhood park.

A tiny museum housed in a New York freight elevator specializes in the "overlooked, dismissed, or ignored."

A magical place that lets you play in and explore the world of Studio Ghibli.