An abandoned Jewish sanatorium is tucked within the woods of Poland.

A delightful museum entirely dedicated to the tiny homes of dolls.

This fairytale medieval church in Poland originally spent centuries in Norway.

What was once an underground Nazi city is now Europe's largest bat reserve.

One of the world's largest collections of medieval religious art.

A 90-ton, gravity-defiant steam locomotive shoots for the skies in this bizarrely beautiful public artwork.

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

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

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

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

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

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

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

The final resting place of more than 200,000 people, this is one of the largest cemeteries in Europe.

A peculiar family mausoleum built by a German nobleman captivated by the occult.

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

A menacing statue of this mythical creature can be seen at the legendary site of the monster's lair.

A huge wooden clock that is so beautiful its creator was forcibly blinded.

The world’s narrowest house makes for an awkward, four-foot-wide living space.

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

This 700-year-old structure is one of the most unique architectural and historic monuments in Gdańsk.

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.

This Nazi ruin was the site where Hitler was almost blown up by a suitcase bomb.