Macabre astrological automaton clock dating to the late 1400s.

The slender brass strip in Prague's Old Town Square was used to tell time from 1652 to 1918.

Vienna's giant wonder wheel had a starring role in one of the greatest noir movies of all time.

A tribute to an iconic act of defiance from the Croatian War of Independence involving a small car.

A towering spire in the fortress of Kalemegdan honors the victorious armies of Serbia during their struggles against the Ottoman Empire.

Destroyed Serbian army headquarters sits half crumbled in a largely revitalized Belgrade.

The second-largest Jewish temple in Bulgaria was deserted after World War II, seized by the communist government and then abandoned again.

An homage to the medieval rulers of Bulgaria.

A busy island at the center of the world that doesn’t actually exist.

An 800-year-old island castle in Guernsey's main harbor.

Once the tallest building in the world, this abandoned church is now a monument to the destruction of WWII.

Hidden in plain sight on a gable between two towers on the roof of shipping firm F. Laeisz' headquarter in Hamburg sits an unexpected bronze sculpture.

A remarkably well preserved tower dating all the way back to the Iron Age.