Underneath this small church are 15,000 bones, arranged by an obsessive academic.

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

This huge metal monument is slowly being stripped to its concrete skeleton.

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

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

The site of the first battle of World War II.

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

Brought to you by the makers of fiberglass dinosaurs.

One of the largest amphitheaters in Europe is a former Nazi gathering place that still stands today.

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

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

A fairytale Gothic castle steeped in Nazi treasure conspiracy theories.

A mysterious structure left behind on the Polish mountainside, sometimes called "Hitler's Stonehenge".

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

Crosses of all shapes, sizes and colors litter the mountain, the site of a huge yearly Orthodox pilgrimage.

A bridge destroyed three times: once as a ruse, then in an actual attack, and finally for the movies.

Countless stories attempt to explain Poland's mysterious J-shaped trees.

An unusual bronze bus shelter is actually an art installation commenting on the city's history with the Nazi party.