Warsaw's fantastically preserved gasworks...almost.

The unsettling remnants of a torn down movie set lies nearby the ruined location of the actual Płaszów Labor Camp.

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.

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

The former Nazi concentration camp stands as a museum to remember this dark chapter in European history.

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.

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

Beneath Kraków Old Town's main square lies a hologram-filled medieval market vampire graveyard wonderland.

Real bones which are said to have belonged to a Polish dragon.

An underground city of salt.

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

An impressive monument to Poland's independence.

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

The largest toy museum in Poland showcases Europe's history of childhood.

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

A stone in Wolin, Poland, marks the possible location of a legendary Viking fortress.

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

Poland's oldest surviving university building holds a wealth of historic science instruments including some used by Copernicus.

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

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

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

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

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