This fairy-tale, neo-Gothic church in the Azores is a world of magical realism.

The largest cave shaft in the world is home to thousands of birds and popular with BASE jumpers.

Meant to be one of the most extravagant hotels in the world, now an eerie, abandoned architectural gem in Mexico City.

Visiting this cacophonous collection of vintage novelties is like stepping into the mind of a crazed toymaker.

The famous artist couple lived and worked here, in two different houses separated by a bridge.

Frida Kahlo's childhood home, now a museum of her life and works.

Russia's giant concrete QWERTY keyboard is likely the largest in the world.

A city block packed with whimsical sculptures that seem to be plucked from a tiled fantasy world.

The world's first museum dedicated to the work of game-changing naturalist Charles Darwin.

Museum design and public transportation meet in this unique Russian train car.

Moscow's most popular cemetery includes the graves of numerous cosmonauts.

Nightmarish example of the unintended consequences of weapons testing.

Secret Soviet city once home to Russian cosmonauts and space training facilities.

Museum celebrating the achievements of the Soviet space program.

Looking for a unifying history, Uzbekistan finds its answer in a 14th Century Turco-Mongol conqueror... despite the fact he wasn't Uzbek.

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

Where Stoddart and Connolly suffered in the infamous Bug Pit.

The (usually) serene burial place of the world's most notorious drug lord.

Enchanting cave with a river crashing through the roof.

This picturesque mansion has gone from opulent ruin to nature museum.

Hidden amid the tropical forest in the Caribbean Sea are the decaying ruins of the Cocaine King's luxurious island party home.

Legend holds eating just one of these black eggs can add seven years to one's life.

A Buddhist temple to honor insects that died for science.

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