Despite attempts by local police to discourage it, Beatles-inspired graffiti has been a means for artists to air grievances for decades.

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

Buried five stories underground, this Soviet bunker is packed with gas masks and Cold War paraphernalia.

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

The hidden lair of an alchemist rediscovered in a 2002 flood.

A Jenga-style cylindrical tower of books that appears to go on forever.

Countless grotesque faces stare out from this eerie Prague art wall.

Two stunning 17th-century libraries and a cabinet of curiosities.

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

This doorless 20th-century elevator doesn't stop or slow down.

Synagogue built from the stones of Solomon's temple contains the golem of Prague.

Microscopic scenes; some call it novelty, some call it art.

The risqué mixed-media sculptures are supposedly a metaphor for Czech politics.

This walkway is so narrow it needs its own light to stop pedestrian traffic jams.

The slender brass strip in Prague's Old Town Square was used to tell time from 1652 to 1918.

What looks like a crashed Zeppelin is actually a bright, airy reading room perched atop a modern museum.

A railway bridge leading nowhere stands lonely in the middle of a meadow.

The only things left in this abandoned Latvian graveyard are a mysterious stone and a ghost story.

What almost started out as a spite house became an eccentric's found object masterpiece.

This abandoned beacon is moving closer and closer to the sea.

A top secret Cold War bunker hidden beneath a Latvian spa facility is now open for tours.

A unique museum dedicated to the famed Soviet director and other cinema greats.

Latvia's symbolic mountain-shaped national library is home to millions of cultural tomes.

A preserved oak tree about 3,500 years old found in Riga, Latvia.