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

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

This artificial cave looks like something out of a fairytale.

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

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

Around 100,000 bodies are buried below the medieval headstones, many of which mark graves with multiple bodies stacked up to 12 deep.

Walk through Czech history in Prague's largest graveyard.

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

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

Macabre astrological automaton clock dating to the late 1400s.

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.

St. Mary's features one of the most spectacularly decorated cathedral interiors in all of Europe.

Poland's oldest surviving university building holds a wealth of historic science instruments including some used by Copernicus.

An artificial date palm stands as a memorial to Warsaw's Jewish community.

Hundreds of notes give thanks to the patron saint of lost causes.

These 18th-century paintings of Warsaw were used to reconstruct the city after World War II.

This enormous 32-foot painting depicts Poland's greatest medieval battle in glorious detail.

Special benches that play Chopin's music are scattered throughout his native city.

This biographical museum honors the groundbreaking scientist at her birthplace in Warsaw.

Aged nearly 1,700 years, the world's oldest bottle of wine is probably still drinkable.

An old department store turned Nazi prison turned artist commune.

The music is over at the Ballhaus Riviera Ballroom, but the ballroom remains in haunting disrepair.

Fall down the rabbit hole into a surreal journey of human consciousness "from ass to soul."