The sanctuary seems to either float atop the water or sink into the dirt, depending on the water level.

A half-mile-long stretch of medieval forts built after a devastating pirate attack persists amid the modern port city.

An unsettling sculpture of a boy hanging out in a street in Ghent has been baffling visitors for years.

Each time a baby is born in Ghent, these streetlights flash in silent celebration.

This fairytale castle was built as a show of power but was nearly torn down thanks to its history of torture.

This narrow Ghent alleyway is an officially sanctioned street art tunnel.

A poignant memorial that traces two hundred years of German history.

The site of the famous Nazi book burning campaign of 1933 remembers its "Night of Shame".

Reminders of the Battle of Berlin still scar the railway.

A haunting contrast of trains that both saved and took the lives of Jewish children in Nazi Germany.

An intersection between architecture, industrial construction, machine, and scientific instrument.

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.

A thin golden line commemorates the deadliest terrorist attack in recent German history.

The last remnants of a massive medieval wall that once encompassed the city of Berlin.

Inside this Jewish cemetery is a memorial to soldiers who deserted the German army and were executed.

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

This water-tower-turned-high-end-apartment building was once the site of an early Nazi concentration camp.

A massive relic of the communist era of Berlin.

An imperial church bombed to ruins during WWII now stands as a jagged memorial.

Metro station with a claim to rock n' roll fame.

A fascinating insight into daily life in the Eastern Bloc.

A prime example of socialist modernist architecture, wrapped in a enormous fresco about the media.

Check the time in 145 countries at once with this East German relic.