This amazing abuela became a diehard metal fan late in life and an icon of Madrid's '80s rock scene.

A whimsical brother of the nearby Fallen Angel statue takes the falling part quite literally.

Commonly acknowledged as the only public monument to the Devil himself.

A 12th-century fortress containing some of Berlin's oldest buildings.

A unique Holocaust memorial tells the personal stories of the Jewish residents exiled from greater Berlin.

This World War II bunker now survives as a documentation of the Nazi regime and war crimes.

A fascinating insight into daily life in the Eastern Bloc.

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.

A tour of underground Berlin takes you through WWII air raid shelters and tunnels used to smuggle people out of East Germany.

This ancient theater was once the home of fierce gladiatorial battles.

An immersive projection art installation uses sound, scale, and light to take visitors inside classic works of art.

A museum on the history of Paris, including a set of Napoleon's toiletries, Proust's room, and relics of the Revolution.

A subterranean shelter remains intact under a busy Paris railway station.

A fearsome dragon clings to a corner of Munich's city hall.

For over 300 years this little carving has been the city’s good luck charm.

A unique underground structure dating back to the 1st century BC.

An expansive complex of subterranean tunnels is all that remains of one of Europe's most formidable medieval fortresses.

This medieval tower is all that remains of the castle where Joan of Arc was held before being burned at the stake.

Lady Liberty's original designer installed a little clone in this French fountain.

This Bordeaux parking garage has 712 indoor spaces, and one outdoor.

The vibrant buildings in the “capital of the comic strip” celebrate the art form that made it famous.

At Monet's beloved home you can still see the Japanese bridge, waterlilies, and weeping willows that were the subjects of some of his most iconic paintings.

An underground city of ancient quarry tunnels hid thousands of Allied soldiers in WWI.