Super-heavy Nazi architectural experiment.

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

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

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

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

A surreal museum of extraordinary industrial objects.

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

This futuristic German spa allows visitors to float in a pool of salt water while zoning out to underwater techno.

A whimsical and twisted animatronic monster tour beneath the streets of Berlin.

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

An eerie, derelict amusement park in Berlin.

This irregularly shaped sea fortress has defended not one but three different sovereign states.

This church also serves as a lighthouse complete with a beacon.

Finnish lake, and scene of an infamous murder mystery.

On a small island, a replica of a Finnish village from the Iron Age.

A subterranean house of worship carved right out of the bedrock.

These enormous, stern-faced statues greet visitors with lanterns, and sometimes costumes.

An alien church provides much needed silence in the midst of a Finland shopping center.

This abandoned villa of makeshift buildings was once the home of dancer Elis Sinistö.

This once-mighty brick factory is now a unique museum experience.

Crawling into this primordial cave may feel disconcertingly familiar.

The tiny, studious rodents greet visitors to the National Archives of Finland.

A lovingly curated curio shop in which the taxidermy wear newspaper party hats, and peanut shells are spread across every surface.

This building features dozens of faces along its facade, although one is a bit chilling.