In the center of Wrocław's old meat market stands a somber tribute to the city's livestock.

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

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

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

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

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

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

This oddly beautiful water cistern is a techno-temple to the wet stuff and a multimedia masterpiece.

The center of this Polish border town was so thoroughly wiped out in World War II that only the foundations remain.

The tallest stone dam in Poland was opened by Kaiser Wilhelm II himself.

This dazzling wooden church was constructed as part of an elaborate peace project after the Thirty Years' War.

A relic of Poland's shipbuilding past, reborn as a sky-high lookout.

According to local legend, this unassuming art gallery was once used to imprison witches.

This formerly-prosperous Silesian mining town was completely demolished in the late 1960s and early 1970s as an attempt to cover up a secret Soviet uranium mine.

An extensive network of secret tunnels was created for the Nazi project "Riese."

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

Naturally formed rock city in Poland.

A fairytale Gothic castle steeped in Nazi treasure conspiracy theories.

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

A World War II torpedo launch station abandoned off the Polish coast.

Gdańsk's lion mascot features in a trail of bronze sculptures scattered all across the city.

Krakow's own version of the Hollywood Walk of Fame.

Down this Cracovian street resides a plaque with a stark message about the city's air pollution.

A statue commemorating a Polish dog who took his role as man's best friend very seriously.