Oldest surviving milestone in Europe outside of the Roman Empire.

This natural hill rose another 130 feet from the debris and rubble added after World War II.

This old wooden funicular railway leads to a cemetery in the forest.

Carved scenes of sex work and unglamorous labour beneath a cultural hero.

One of Warsaw's coolest malls was once a center for anti-Nazi resistance activity.

A carved figure embodying the palace’s pint-sized but protective spirit rooted in local folklore.

Prior to modern plumbing, some toilets were in tall towers perched over rivers.

The original shop where the iconic Belgian praline was invented.

A curious memorial to the Berlin Wall, German division, the war, and those who died at the wall.

The home of Joseph Stalin during the Potsdam conference.

It’s a painted window that looks completely real, hiding on a building in the market square.

One of the best-preserved pieces of DDR propaganda in Berlin.

Visitors dating back to the 1600s carved their marks in the stones of the iconic tower.

Explore this medieval cathedral by trying to spot all the malevolent monsters hiding in its beautifully colored windows.

An abandoned swimming pool decays on the outskirts of Berlin.

A Bauhaus co-founder designed this quirky, abandoned granary.

This extensive collection covers thousands of years of Polish military history.

This statue is said to bring good luck to visiting lovebirds.

Complex tile installations designed by a renowned Polish artist in a Warsaw subway.

During the renovation of this bas-relief, the constructors added one unusual element.

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

Remnants from a time before electricity.

These plaques found across Warsaw commemorate the sites where executions or battles took place during the German occupation.

This ex-prison dates back to the Middle Ages.