This beehive tomb built for royalty sat hidden for over 3,000 years.

The abandoned summer estate of the former Greek Royal Family.

After a catastrophic forest fire, a Greek artist transformed scorched tree trunks outside an old sanatorium into this haunting sculpture garden.

This massive piece of artwork weighs more than 250 tons, and was designed as a tribute to the first president of the United Arab Emirates.

This mountainside open-air museum was built from the ashes left behind by a devastating fire.

This woodland architectural installation acts as a camera obscura for the heavens.

A curious art piece along a lovely biking trail marks several historic floods via a series of colorful poles that represent floodwater heights.

Between 1930 and 1946, a tobacco farmer laid his beloved horses and mules to rest in this small patch of pine forest.

This fallen red oak tree has been transformed into a piece of trailside art.

A charming 17th-century alley is lined with secondhand bookstores and antiquarian shops.

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

France's most famous cemetery, with some of its most curious tombs.

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

A treasure trove of artifacts, books, and artwork from the "golden age" of exploration.

An abandoned cemetery lies in ruins as the surrounding forest swallows it whole.

An enormous, inside-out glass globe built in 1935.

A snapshot of the city's fascinating voodoo culture.

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

America's most famous museum of medical oddities is home to the remains of Albert Einstein's brain.

An eerie, derelict amusement park in Berlin.

A peculiar mansion built by the troubled heir to the Winchester Rifle Company fortune.

The world’s first penitentiary, meant to be humane, drove men insane.

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

Amid the bustle and noise of the Financial District hides a secluded garden oasis above the city streets.