The silly symbol for an underground protest group is now scattered around the city.

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

This ex-prison dates back to the Middle Ages.

A mysterious concrete hand reaches out from between the stones of Uniwersytecki bridge.

An early 20th-century school building whose clock tower and carved symbols quietly tell the story of the trades once taught inside.

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

A striking public sculpture representing the period of martial law in Communist Poland.

An underground city of salt.

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

Learn the fine art of making a centuries-old treat at this hands-on food museum.

This cemetery of rusting Soviet-era steam locomotives and train cars offers an apocalyptic glimpse into a bygone era.

An underground city beneath Krakow's postwar socialist utopia.

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

A Soviet era flat that refused to conform to the dull gray standards.

Where visitors can play more than 150 retro arcade games.

This sprawling concrete suburb of Kraków was designed by the Soviet Union as the model proletarian city.

An artificial hill and apparent calendric structure built in the Early Middle Ages immortalizes a legendary Polish princess.

A collection of modern and vintage pinball machines housed in the cellar of a 15th-century building.

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

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

Seven dragon statues—including one that breathes real fire—are scattered throughout the streets of Krakow.

This Polish cave has housed a dragon, a brothel, and an enduring legend.

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

Real bones which are said to have belonged to a Polish dragon.