The largest toy museum in Poland showcases Europe's history of childhood.

A memorial to the beloved brown bear that served in the Polish army during World War II.

A World War II torpedo launch station abandoned off the Polish coast.

This imposing 20th-century castle was abandoned before it was ever completed.

Boats must transform into railroad cars to navigate this Polish canal.

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

This centuries-old wooden wonder was built in less than a year and is one of Europe's largest timber-framed churches.

Poland's oldest salt mine has nearly everything one needs to live underground forever.

The traditional Polish croissant, folded 81 times into the shape of a horseshoe, is a legally protected cultural treat.

A statue honors the children who fought Nazis in Poland.

A striking public sculpture representing the period of martial law in Communist Poland.

This fairytale inspired, warped building houses restaurants, shops, and a radio station.

These massive moving sand dunes have swallowed an entire village and are still on the run.

Polish luminaries and masterful folk art find sanctuary in this unique cemetery.

A national collection of Communist-era musical posters.

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

An abandoned Nazi explosives plant founded by the inventor of dynamite is now an underground museum.

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

This man-made mound monument was built out of soil from all across the Polish empire.

Warsaw's fantastically preserved gasworks...almost.

A hidden art gallery in an abandoned Warsaw fort.

After the famous composer died in Paris, his sister snuck his heart out of the country to honor his wish that it be buried in their native country.

This uber-quaint Polish village is known for its habit of painting elaborate floral motifs on just about everything.

A fairytale Gothic castle steeped in Nazi treasure conspiracy theories.