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

On this Polish road, an optical illusion makes cars seem to roll uphill.

Brought to you by the makers of fiberglass dinosaurs.

Once a giant gingerbread factory, this space now hosts exhibits and workshops on the historic treat.

A collection of old neon signs from all over Poland line a secluded courtyard.

The silly symbol for an underground protest group is now scattered around the city.

Museum dedicated to "the man who moved the Earth."

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

Communism's topsy-turvy effect on Poland has been brought to life in this wacky tourist trap.

This Polish cave has housed a dragon, a brothel, and an enduring legend.

The former Nazi concentration camp stands as a museum to remember this dark chapter in European history.

Real bones which are said to have belonged to a Polish dragon.

An underground city of salt.

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

In the summer, the area around this sculpture transforms into a vibrant concert venue.

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

This bell stars in a tragic love tale and is said to make wishes come true.

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

The giant statue and its model solar system honor the native Pole who declared that the Earth revolves around the Sun.

The Polish capital has had a deep connection to its guardian mermaid for almost a millennium now.

A statue honors the children who fought Nazis in Poland.

A tribute to the Polish insurgents who fought in the failed attempt to end their city's Nazi occupation.

Vienna's giant wonder wheel had a starring role in one of the greatest noir movies of all time.

Legend has it this fountain built to symbolize the Pope’s power hides a strange secret concerning Neptune's manliness.