People in Poland have rallied to save this unnatural desert from being reclaimed by the forest.

An open-air museum of 18th-century homes and churches transported from various villages in Southern Poland.

Come to this Polish museum to take a good, clean look at filth.

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

A small granite monument marks where the borders of three countries meet.

Modern art commemorates one of the first military actions of World War II.

One of only two places in the world where two rivers cross each other without the waters mixing.

These mechanical goats first battled it out in the year 1551, all because of an overcooked deer.

Learn the fine art of making a centuries-old treat at this hands-on food museum.

These rare statues are one of the few remaining material witnesses to Old Prussian culture.

This grubby wall is said to be one of the Earth's esoteric energy centers.

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

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

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

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

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

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.

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

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

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

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

A 20th-century picture show in 3-D.