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

The most visited, and possibly most controversial, museum in Germany.

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

Berlin's old airport.

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

The abandoned remains of this Victorian brewery hide crumbling bowling alleys and rusting industrial gear.

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

This water-tower-turned-high-end-apartment building was once the site of an early Nazi concentration camp.

Christ's blood preserved in a Belgian town.

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

Most prolific publishing house in the 1600s open to the public.

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

This collection of over 50 murals celebrates Brussels' rich history as the self-proclaimed home of the "comic strip."

From Tintin to the Smurfs, Europe's greatest graphic icons are celebrated in a grand Art Noveau gallery.

Brussels' favorite peeing boy has a sister.

A little sculpture with a large wardrobe.

Three floors of musical instruments coming from all corners of the world and hundreds of years of musical history.

The world's tallest boat lift stands as a massive piece of industrial tourism.

A multi-storied adobe complex has been inhabited for more than a thousand years.

A phenomenal assembly of pueblos in New Mexico is the most complete example of ancient ruins north of the border.

Legends surround this jagged rock formation in the New Mexico desert.

The ancient dwellings of the Puebloans, located in the cliffs of majestic mesas.

A house carved into a rock in the 1940s.

The largest island on the great salt lake is home to curious creatures and strange stories.