The bunker where Hitler took his own life is hidden under this deliberately ordinary parking lot.

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

A fascinating insight into daily life in the Eastern Bloc.

Gardens representing parts of Asia, Europe, and the Mid East are tucked away among the Soviet-style buildings in East Berlin.

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

A museum dedicated to the history of a terrifying secret police is now held in their former headquarters.

The fairy tale castle of the "fairy-tale king."

1,500 Commonwealth servicemen of World War II are buried or commemorated in this cemetery.

One of the best-preserved medieval streets in Europe.

Every spring, locals see the shadowy figures of a ghost army of slain Greek soldiers descend upon this ruined fort.

This 15th-century island fortress later served as home to the executioners no one wanted to live near.

This abandoned Greek island was the last active leper colony in Europe.

This secret coastal village is studded with pastel-colored houses all piled on top of one another.

Heralded as the world's first theater, these ruins are often overlooked as they reside in the shadows of the Acropolis.

An ancient octagonal weather station named for the eight Greek gods of wind.

A minotaur, a labyrinth, and a dubious restoration pull in visitors from around the world.

This ancient Greek place of assembly and marketplace is being revealed layer by layer below the modern Athens cityscape.

Monasteries on rock pillars, once accessible only by frayed ropes.

The hallucinogenic center of the ancient world.

Spanish architects used seized Muslim gravestones to rebuild parts of the fortress.

Spain's unique Mosque-Cathedral has been a place of worship for both Muslims and Christians throughout its history.

Rare karst landscape eroded from a flat seabed.

Paris' linguistic guide to the international language of, yes, love.

This bustling Italian plaza is built on the ruins of an ancient Roman amphitheater.