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

Tiny memorials honor individual victims of the Holocaust.

Berlin's oldest surviving academic architecture hosted decades of animal dissections.

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.

Berliners converted a bombed-out, disused lot into a community-run urban farm with its own cafe and bar.

A socialist building dedicated to teachers showcases one of the largest Soviet mosaics in the world.

A prime example of socialist modernist architecture, wrapped in a enormous fresco about the media.

Check the time in 145 countries at once with this East German relic.

A fascinating insight into daily life in the Eastern Bloc.

Berlin's natural history museum houses the world's largest mounted dinosaur and the late beloved polar bear Knut.

The celebrated eyesore created by starry-eyed sweethearts.

Home to 10,000 medical specimens including the remains of Rudolf Virchow's extensive collection of pathological specimens.

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

The last remnants of a massive medieval wall that once encompassed the city of Berlin.

It houses the remains of a 17th-century version of the Titanic.

There are hidden patterns on the subway seats of some Stockholm metro cars.

Stockholm's decidedly unique public transit system has doubled as the world's longest art gallery for decades.

Take a leisurely walk through the park to find the seven giant troll sculptures hidden throughout the park.

An open-air sewer system that was covered piece-by-piece over 300 years.

A man throwing a giant severed hand towers over Antwerp’s main square.

Rare wooden escalators lead deep down into an otherwise staggeringly monotonous tiled tunnel.

This ghost town in Belgium will lose its street art when it ceases to exist.

A collection of weird and wonderful art fills a former houseplant nursery.