Rocks carved with biblical passages in the 1800s.

A memorial to a Swedish hockey player's "encounter" with aliens.

This massive stone and steel monument remembers a century-old battle that cost thousands of lives and nearly destroyed the city.

Thanks to its heroic service during WWII this Soviet castle has been turned into a monument towered over by a brutalist titan.

Take a schvitz just like an infamous Soviet dictator while his unblinking eye looks on.

The world's biggest floating museum in Gothenburg, Sweden.

Iron Age grave stones and Viking burials, a short drive from Gothenburg.

A floating underwater hotel, created by a Swedish artist.

This wonky bit of historical taxidermy is experiencing a second life online.

Once the nail factory shut its doors, this Swedish factory town was abandoned, leaving behind a modern ghost town.

Early habitat dioramas and home of the elusive gaff, the skvader.

A man has revenged his true love's betrayal through tears and stone genitalia.

This Stockholm light tower can be controlled by anyone with a smartphone.

The remains of Alfred Nobel's first nitroglycerine factory can still be found on the shores of a Swedish bay.

This trio of stone spires claims to be the only preserved medieval execution site in Europe.

Now a hotel, this former bank was the site of a robbery that spawned a psychological phenomenon.

Sweden's first nuclear reactor, R1, can be visited 25 meters underground.

A mocking tribute to the past and modern leadership of Prague.

The history of occult science is turned into a creepshow at this lurid Prague tourist attraction.

This massive concrete sculpture is said to be the heaviest communist monument on Earth.

Increasingly decayed figures stand as a powerful reminder of the human costs of Czech Communism.

This automated sculpture of two men peeing will spell out text messages with their micturition.

A 400-year-old mummified arm dangles from the ceiling of St. James the Greater, serving as a warning to thieves.

This Prague museum collects brutalist relics and memories from the country's former Soviet rule.