Sweden's oldest animated sign is still lighting up the skyline today.

A Japanese video game arcade hides in the back of a Swedish pool hall.

A remarkable cabinet of curiosities in an art space in the center of Berlin.

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

Once a path for Jewish funeral processions, this unassuming alleyway is rich in local lore.

A replica of the Liberty Bell rang daily from West Berlin's City Hall throughout the Cold War.

A fascinating insight into daily life in the Eastern Bloc.

This Czech church doubles as something of a permanent fashion exhibition for a statue of the Infant Jesus.

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

Street artists transformed an abandoned air vent into the beloved Star Wars robot.

A random tree outside a Budapest hotel has become a DIY shrine to the late singer.

Once the home of a hermetic monk, this cave now houses a small church.

A trough of 700 strange bronze faces runs through a narrow alley in Ljubljana's old town.

This museum preserves the hand-dug tunnel that kept Sarajevo afloat during the Serbian siege.

The place where World War I began.

Replicas of Apollo's leonine stone guard cats still line a sacred row in Greece.

A unique housing complex born from the aftermath of the Greek Civil War.

Heralded as the world's first theater, these ruins are often overlooked as they reside in the shadows of the Acropolis.

The Cycladic architecture makes this Athens neighborhood feel like an island paradise hidden in the shadow of the Acropolis.

This ancient Greek place of assembly and marketplace is being revealed layer by layer below the modern Athens cityscape.

The marble facade hides a little-known medical museum with early surgical instruments and rare copies of canonical texts.

This palatial spiral staircase was so unusual the name "snail" was given to the noble family who built it.

As can be expected from a centuries old church built in a canal city, the undercroft of this house of worship is beautifully flooded.

The famous sculptor left his mark on this Italian wall in an internationally protected example of street art.