According to local folklore, this odd face on a wall of Rudyard Kipling's former home can bring visitors a bit of luck.

This huge pile of volcanic boulders hides a stunning network of secret grottoes.

This island hill is strewn with boulders carved by shipwreck victims from the age of sail.

In paradise, feral pigs have claimed an island all to themselves.

This peculiar lake of pitch is so thick and viscous that one can walk on its surface.

A fantastical bed and breakfast with magically unique rooms.

Peruse rare tomes like poetry bound in pearls or books with branches and berries growing out of their spines.

The world-record holder for the longest bridge stretching continuously over water.

Centuries-old bridges grown from tangled roots.

An explosion of natural color known as "the river that ran away from paradise."

Italian horror legend Dario Argento’s own shop hides a sinister museum-dungeon in the basement.

Prowl through this sprawling bazaar under a massive Soviet-era dome for delicious eats.

This niche museum devoted to ancient religious artifacts is shaped like the very thing it displays.

It might look like a doghouse, but this small structure was actually built to house a spirit from Maya mythology.

Renowned restaurant tucked in a cave once occupied by buccaneers.

Drink and dine in a coral cave that's at least 120,000 years old.

Communism's topsy-turvy effect on Poland has been brought to life in this wacky tourist trap.

A mocking tribute to the past and modern leadership of Prague.

This piece of Australian modern art is part joke and part history.

This ancient Roman prison is decorated with an upside-down cross not as blasphemy but as saintly tribute.

A marvel of Byzantine engineering under the streets of Istanbul.

A tree that defies gravity grows in an ancient ruin.

A reversed traffic signal that was once violently misinterpreted as a statement on British-Irish relations.

Upside-down trees serve as natural flower pots in this hanging garden of Alaska.