A secluded art gallery hidden within the cellars beneath Tallinn’s medieval monastery.

This statue of the great Argentinian car driver is located near a famous curve of the Monaco Grand Prix.

Crawling into this primordial cave may feel disconcertingly familiar.

Collection of nearly 500 concrete figures sculpted by the late Veijo Rönkkönen.

These Finnish rapids have been attracting tourists for over a hundred years and are now released with the push of a button.

Legend has this precariously placed rock was placed by giants. Science has another explanation.

These 5,000-year-old cave paintings provide a glimpse into prehistoric Finnish life.

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

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

A menacing statue of this mythical creature can be seen at the legendary site of the monster's lair.

The unsettling remnants of a torn down movie set lies nearby the ruined location of the actual Płaszów Labor Camp.

Launch site for nuclear war against Western Europe.

Brought to you by the makers of fiberglass dinosaurs.

People in Poland have rallied to save this unnatural desert from being reclaimed by the forest.

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

Naturally formed rock city in Poland.

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

Gliwice Radio Tower, likely the tallest wooden structure in the world.

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

A memorial to the beloved brown bear that served in the Polish army during World War II.

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

This man-made mound monument was built out of soil from all across the Polish empire.

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.