This fairytale castle was built as a show of power but was nearly torn down thanks to its history of torture.

Climb inside an iron crystal magnified 165 billion times its normal size.

Meet the bronze beloved pet to a family of famous peeing statues.

Cozy basement bar sports an inventory of over 2,000 beers.

A little sculpture with a large wardrobe.

A brush maker used his factory to protect blind Jews from the Gestapo.

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

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

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

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

Tiny memorials honor individual victims of the Holocaust.

This obscene artwork on the side of a newspaper office pokes fun at a rival paper's former editor-in-chief.

On the Spree bank, discover one of the last reminders of a symbolic wall that divided, and was torn down by the people.

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

The compass on its front was a handy tool for 17th-century merchants who needed to know the direction of the wind.

The world's largest wooden structure.

The final resting place of the great navigator, or maybe his brother.

This sweet-toothed bear searching for snacks has been a symbol of Madrid for decades.

This unique rock formation is quite the local celebrity, although one day it may come crashing down.

You would never come across this tiny green oasis if you didn't know it existed.

Christ's blood preserved in a Belgian town.

Originally used to sell brandy, the bull-shaped billboard became an iconic symbol of Spain.

The comedy and tragedy of Oscar Wilde is preserved in a Dublin park, captured in a sculpture of colorful stone.

Giant topiary dog once played a role in a terrorist bomb plot.