A tribute to the Polish insurgents who fought in the failed attempt to end their city's Nazi occupation.

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

The world’s narrowest house makes for an awkward, four-foot-wide living space.

This hidden collection of everyday objects illustrates life within communist Poland.

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

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

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

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.

This uber-quaint Polish village is known for its habit of painting elaborate floral motifs on just about everything.

A hidden art gallery in an abandoned Warsaw fort.

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

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

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.

An underground city of salt.

The blood-soaked ruins of the castle where the murderous Blood Countess was walled in alive.

This statue points to another unusual companion work of art often overlooked by visitors.

An extraordinary museum devoted to the pop art legend created by Slovak artists.

The world's newest astronomical clock is also its most accurate.

This spaceship sculpture in the middle of the Slovakian capital looks like it just crash-landed.

Inside the Šomoška National Nature Reserve exists a unique rock formation rarely seen in the world.

A perfectly preserved hill village where the buildings are painted like white lace.

A unique hotel for the artistic soul.

The 700-year-old fortress was the site of Count Orlok's castle in "Nosferatu."