A small granite monument marks where the borders of three countries meet.

The coffin-shaped church was once home to monks who slept in coffins.

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

Special benches that play Chopin's music are scattered throughout his native city.

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

A tree planted by Marie Curie is treasured by the Radium institute that she set up.

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

This open-air museum was originally a World War II testing ground for German missiles and rockets.

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

This tower in a small Polish village uses the power of a sacred bell to ward off mischievous weather spirits.

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

These mechanical goats first battled it out in the year 1551, all because of an overcooked deer.

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

One of the largest amphitheaters in Europe is a former Nazi gathering place that still stands today.

A mysterious emblem tucked in an small alleyway is actually the coat of arms of a heroic medieval family.

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

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

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

These rare statues are one of the few remaining material witnesses to Old Prussian culture.

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

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

At first glance, this area seems like just another city park, but the lush landscape hides a dark past.

A 90-ton, gravity-defiant steam locomotive shoots for the skies in this bizarrely beautiful public artwork.

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