Teeming with illegal goods and services, this towering maze of vice is also a popular tourist accommodation.

A battle between nature and architecture in the Cambodian jungle.

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

Sacred Buddhist home of some spiritual monkeys.

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

This precariously balanced boulder is said to be a hunk of stolen butter dropped by the gods.

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

An apparition of Virgin Mary in Herzegovina.

Bridge that died in war and was resurected.

Oriental bazaar in the heart of Sarajevo.

A number of craters left by fatal mortar strikes have been filled with red resin to remember those lost during the Siege of Sarajevo.

A 1970s resort city now stands abandoned, caught in the middle of a divided island.

Two large posteriors in one giant statue.

The ruins of a bombed medieval village memorialize the destruction of the Spanish Civil War.

Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.

Catalonia Tradition: Beating the hollow Christmas log until it defecates in your fireplace.

Week-long block party becomes a competition for the best decorated street.

These secluded and abandoned anti-aircraft defenses have become one the most scenic viewpoints in Barcelona.

Living towers made of people that are now recognized by UNESCO.

Stunning Roman aqueduct used for 1900 years and still standing.

Ottoman-era houses lovingly preserved.

Mediterranean castle on a tiny Turkish island.

In this historic region, homes and churches are carved into ancient volcanic rock formations.

The deepest underground city in Turkey was designed to protect 20,000 people behind massive stone doors.