The world's largest wooden structure.

The former Nazi concentration camp stands as a museum to remember this dark chapter in European history.

A little sculpture with a large wardrobe.

This collection of over 50 murals celebrates Brussels' rich history as the self-proclaimed home of the "comic strip."

Meant to be a lavish presidential home, the palace became a symbol of the fall of South Vietnam.

The notorious "Hanoi Hilton" where Vietnamese colonial subjects and later American POWs, including John McCain, were imprisoned.

Home of the unusual art of water puppetry, one of Vietnam's oldest curiosities.

Twice a day a speeding train passes only inches from the homes of this residential neighborhood.

A treasure trove of pathological, forensic, parasitological, and anatomical specimens.

This elaborate temple was built around one of the Buddha's teeth.

Once thought to be the Garden of Eden it holds a holy footprint claimed to belong to Adam, Buddha and Shiva.

An ancient stone fortress considered by many to be the eighth wonder of the world.

Singapore's landscaping project is home to 18 incredible Supertrees.

One of the largest Buddhist stupas in the world keeps an eye out in every direction.

Sacred Buddhist home of some spiritual monkeys.

Holy Hindu shrine in an enormous, monkey-filled limestone cavern.

At 72 feet below sea level, it's the lowest commercial airport in the world.

The world's longest outdoor covered escalator system transports commuters through Hong Kong's hilly terrain.

This collection of reclaimed landmines acts as both an exhibition of their deadly history and as a shelter for children affected by them.

A battle between nature and architecture in the Cambodian jungle.

Mined to a depth of 240 meters with a perimeter of about 1.6 km, the largest hand-dug excavation in the world.

This picturesque island graveyard is the final resting place of dozens of notorious pirates.

The largest of the Fuji Five Lakes is home to an impressive swan population—some real, some with paddles, and one with an observation deck.

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