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

These 18th-century paintings of Warsaw were used to reconstruct the city after World War II.

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

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

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

An impressive monument to Poland's independence.

This unique railroad museum secretly contains the history of Poland rebuilding itself from the inside-out.

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

This bell stars in a tragic love tale and is said to make wishes come true.

This grubby wall is said to be one of the Earth's esoteric energy centers.

Relive a Polish uprising via an enormous, century-old cyclorama.

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

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

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

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

In the midst of a living monument to Soviet social engineering, Polish Catholics built this church by hand.

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

A monument to Poland's famous alleged UFO abduction case.

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

This imposing 20th-century castle was abandoned before it was ever completed.

Boats must transform into railroad cars to navigate this Polish canal.

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.

A haunting deserted hotel is a favorite with artists and photographers.