The giant statue and its model solar system honor the native Pole who declared that the Earth revolves around the Sun.

This picturesque castle in Poland has a rich history, including a legend that ties it to lost Incan treasures.

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

A merchant court dedicated to the fictitious King Arthur is heavily adorned with bizarre Renaissance art.

This mysterious and once-grand memorial still embodies a remarkable architectural vision.

This 13th century Gothic brick castle is the largest in the world by surface area.

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

The hollow trunk of this 650-year-old tree was used as a hideout by two Jewish brothers during World War II.

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

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

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

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

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.

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 Polish cave has housed a dragon, a brothel, and an enduring legend.

The site of the first battle of World War II.

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

The walls and ceiling of this Polish church are decorated with thousands of skulls, with another 21,000 skeletons just below.

This bar and museum are devoted to the controversial comic book work of Kája Saudek.

Walk through Czech history in Prague's largest graveyard.

Countless grotesque faces stare out from this eerie Prague art wall.

The hidden lair of an alchemist rediscovered in a 2002 flood.