The manor house where the Polish composer spent childhood summer holidays is now a museum and concert hall.

While the U.S. and Soviet Union were engaged in a space race, Poland built a UFO on the ground.

The two abandoned overpasses are among the largest bridges in Poland.

This hilltop ruin is of the hundreds of stone columns built in tribute to the first German chancellor.

Dubbed "Wistom" by locals, this abandoned factory is an urban explorer's dream.

This towering statue of Jesus provided internet to the surrounding area.

Legend says a giant, venomous spider once dwelled within this Polish church.

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

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

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

The first, and perhaps only, monument dedicated to Wikipedia.

The site of one of the largest prison escapes of World War II.

An abandoned Jewish sanatorium is tucked within the woods of Poland.

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

This now-defunct synthetic fuel plant was once a major cog in the Nazi war machine.

This mushroom-shaped rock has frustrated and fascinated locals for centuries.

In northeastern Poland, the ruins of a massive granary overlook the Narew River.

Built to transport German U-boats through the never-completed Masurian Canal, the locks near this Polish village are now home to a rope course.

A somber memorial honors the hundreds of thousands of lives lost at this labor and extermination camp.

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

This fortress was designed to prevent a Nazi invasion but was never used.

Enormous sandstone towers loom within a Czech forest.

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

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