Hub for hallucinogenic Amazon religion.

This Budapest bar allows drinkers to leave their mark on the walls, floor, and even ceiling.

The Voodoo Superstore of the world.

Hidden behind a wall for decades, this masonic lodge was only rediscovered during renovations.

The mysterious, fantastical woodland inspiration for "The Lord of the Rings."

A swing to dangle you off the very edge.

Each spring, a dreamlike carpet of bluebells overtakes the forest floor.

A glacier pocked with ice caves and surrounded by rainforests.

The world's largest man-made underground caverns offer unparalleled underwater wonders.

A colossal floating restaurant built to look like a ancient Chinese imperial palace.

Even France's favorite aquatic son Jacques Cousteau, couldn't get to the bottom of it.

This lavish estate recalls the opulent history of Calcutta.

Three prestigious academic collections come together to create a world-class natural history museum.

This memorial commemorating fallen Swiss Guards of the French Revolution has been called the saddest stone in the world.

An underground city of ancient quarry tunnels hid thousands of Allied soldiers in WWI.

The phone booths of New York City have all but disappeared, but their remains were once found in this "graveyard," sadly now removed as well.

The Buddhist temples of Yamadera, built into a mountain side, feature a viewing deck with sweeping views.

This failed condo development was reborn as a street art hub.

One of the most scenic stretches of road in America winds between some of the country's oldest trees.

According to myth, Zeus himself was hidden in this cave to escape being eaten by his dad.

This abandoned subway station beneath the Waldorf-Astoria hotel is allegedly used to secretly transport presidents.

A collection of haunted artifacts chronicles the career of the world's most famous paranormal investigators.

A train station that was abandoned by the coal industry and was later converted into a cocktail bar.