Derelict airplane bodies serve as both home and income for three Thai families.

Bangkok's men with dangerous jobs come here in search of protective talismans.

The headquarters of the Mahanikai school of Buddhism, Thailand's largest monastic order.

A limestone wonderland of water and subterranean secrets.

A white Buddhist temple with a golden restroom.

The ancient latrines of the Greeks, in all their public glory.

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

A fountain standing as a testament to a doomed alliance.

Built to test magnetically levitated elevators, the tower also boasts Germany's highest visitor platform.

The prison where Hitler wrote "Mein Kampf," and 278 Nazis were later executed for war crimes.

The ruins of an abandoned crematorium haunt an eerie deserted German cemetery.

A castle from the Holy Roman Empire that hosts traveling youth... in its stables.

This ancient ruined monastery has been destroyed by fire so many times that it seems like God hates it.

These 18th century gardens tell a rocky story of the son of Odysseus.

Super-heavy Nazi architectural experiment.

The prototype for all Nazi concentration camps.

The site of the famous Nazi book burning campaign of 1933 remembers its "Night of Shame".

Terrifying derelict military hospital once housed a recuperating Hitler.

When the rain falls, this drain system turns into a musical instrument.

A striking 12th-century-style castle built on the edge of a cliff.

Thousands of coffin-like pillars make up this controversial Holocaust memorial.

Art and a pun, all in one.

A narrow passage next to a cafe leads to a courtyard exploding with murals, tags, and paste-ups.

A whimsical and twisted animatronic monster tour beneath the streets of Berlin.