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

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

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

Extremely famous in his native country, this Cracovian painter is all but unknown beyond Polish borders.

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

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

This ex-prison dates back to the Middle Ages.

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

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

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

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

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

A collection of old neon signs from all over Poland line a secluded courtyard.

Keep your eyes out for this "ghost" and walking pun.

Known simply as "The Hand," this famous public sculpture in Berlin was featured in a Depeche Mode music video.

In the summer of 1957, a massive architectural exhibition showed off the future of urban living in this German neighborhood.

For more than 170 years, this family-run bakery has been serving Berlin’s best Baumkuchen, or “tree cake.”

A historic fire call point.

A monument to the three wars that led to German unification towers within a Berlin traffic circle.

Someone loved this song enough to carve all of its lyrics onto a tree trunk in a Berlin park.

One of the world's heaviest musical instruments towers within a popular urban park.

Dedicated to the European Sinti and Roma peoples murdered during the Holocaust.

The world's first clock to use set theory as a measure of time required the invention of a new light bulb just to maintain its obtuse measurements.

An astonishingly accurate water clock that doubles as an hourly spectacle in this Berlin shopping area.