The only Buddhist temple in Japan dedicated to breasts.

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

A gorgeous gilded tower houses what may be the world's largest collection of gin.

This Singaporean food-court stall was home to the world's cheapest Michelin-starred meal.

This spectacular bridge supported by two gigantic hands looks like something out of a fantasy universe.

This bridge is embedded with a giant steel dragon that breathes fire from its mouth.

Life-sized painted illusions let pedestrians blend in with the street art.

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

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

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

The once forbidden "secret cabinet" of erotic art from excavations of Pompeii and Herculaneum.

A labyrinth of ancient tunnels hidden below the city holds the ruins of 2,500 years of history.

Dug as a secret royal escape route, the tunnel became a wartime bomb shelter and dumping ground for vintage cars.

An overlooked monument to the celebrity gangster who helped put the sin in Sin City.

One of the world’s longest pedestrian suspension bridges.

The medieval town's star-shaped walls are geometrically dazzling, though not entirely impenetrable.

These rock drawings in the Côa Valley also create an ancient optical illusion.

"Satisfying" is a good way to describe these beautifully aligned rows of Spanish mills.

This ship offers visitors the chance to spend the night aboard a former floating hospital for fishermen.

A stunning 18th-century site where pilgrims ascend by a series of punishing stairs only to return via funicular.

Local lore says the devil built this beautiful medieval bridge to help a fleeing bandit.

These narrow stone granaries have been used to store and dry out grain for hundreds of years.

A deer-headed statue that brings together a 12th-century legend and big wave surfing.

The ancient sauropod tracks found in this former quarry are some of the largest in the world.