This cluster of little wooden huts once ground local farmers’ wheat into flour during the days of the Austro-Hungarian Empire.

A war-torn Olympic relic is being overtaken by graffiti and nature.

A trough of 700 strange bronze faces runs through a narrow alley in Ljubljana's old town.

A whimsical bridge adorned with decorative dragons.

This abandoned Slovenian military barracks has become a punky-political art squat.

When this monument to Slovenia's national poet was erected, it's said to have sparked the ire of nearby church authorities.

Where the lovelorn find a home for their sentimental keepsakes.

A spherical "micro-nation" in the heart of Vienna.

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

Legend holds that this knife serves as a chilling reminder of the deadly rivalry between two local builder brothers.

A tribute to the first human in space.

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

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

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

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

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.

An underground city of salt.

Polish luminaries and masterful folk art find sanctuary in this unique cemetery.

The last king of Poland was interred in this church nearly 200 years after his death.

In the summer, the area around this sculpture transforms into a vibrant concert venue.

Atop this library is one of the most beautiful green spaces in Warsaw.

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

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