Built to transport German U-boats through the never-completed Masurian Canal, the locks near this Polish village are now home to a rope course.

A somber memorial honors the hundreds of thousands of lives lost at this labor and extermination camp.

Old cabin-like homes in a rural community untouched by time are known for their vibrant and colorful window shutters.

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

The two abandoned overpasses are among the largest bridges in Poland.

Memorial to the lost dead of Gdansk, whose resting places were destroyed during World War II.

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

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

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

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

At first glance, this area seems like just another city park, but the lush landscape hides a dark past.

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

A statue honors the children who fought Nazis in Poland.

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

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

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

This sprawling concrete suburb of Kraków was designed by the Soviet Union as the model proletarian city.

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

Warsaw's fantastically preserved gasworks...almost.

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.

A program of Communist glamour in post-Stalin Poland is preserved in this colorful museum.

Celebrating the works of a beloved Italian actor, known for such cult films as 'They Call Me Trinity' and 'Watch Out, We’re Mad!'

For patriotic Russians, this memorial honoring the Soviet soldiers who died liberating Berlin in 1945 is the most sacred location outside of Russia.