5,000 skulls in memorial to those killed by the Khmer Rouge.

Artifacts and memories from the Vietnam war, located in a place that experienced it first hand.

Ha Long Bay's "Cave of Surprises" houses a popular phallic rock formation.

The granite head appears to be deep in thought and half buried in the ground.

This massive mall has hundreds of shops, an amusement park, and a history of deadly amusement attractions.

New fungal and bacterial species call this deadly lake home.

The small cliffside monastery known as the Tiger's Nest is said to be the meditation site of an 8th-century Buddhist master.

This Himalayan airport provides one of the most difficult landings in the world.

An ancient iron pillar in Delhi that seems to be rustproof.

Time has stopped at the house where Gandhi died.

Made by a man on a worldwide sanitation crusade.

The 953 windows undoubtedly make this the world's most beautiful screened porch.

Once an indicator of social class, the color blue has come to define this city on the edge of the Thar Desert.

This African beach is home to thousands of rare mainland penguins that are known for their annoying voice.

Formerly known as the Malay Quarter, Bo Kaap is a colorfully-painted suburb located in the “Mother City” of South Africa.

The largest known Ancient Egyptian obelisk.

Former hunting lodge of a duke who was an avid collector of impressionist works.

A horde of stray cats rule in this secluded Parisian cemetery under a bridge.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

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

A Parisian cemetery where the elite and artistic are interred beneath an eccentric collection of tombs.

The water-powered carriages are long gone, but for over a century this funicular railway has been the fastest route to the highest point in Paris.

An all-American grocery store in Paris sells U.S. "cuisine" like Pop-Tarts and Heinz ketchup to homesick ex-pats.

A museum on the history of Paris, including a set of Napoleon's toiletries, Proust's room, and relics of the Revolution.