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

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

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

The silly symbol for an underground protest group is now scattered around the city.

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

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

Museum dedicated to "the man who moved the Earth."

St. Mary's features one of the most spectacularly decorated cathedral interiors in all of Europe.

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

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.

Warsaw's fantastically preserved gasworks...almost.

A fairytale Gothic castle steeped in Nazi treasure conspiracy theories.

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.

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

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

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