The small alleys in Lübeck's Old Town are a result of medieval urban sprawl.

A stunning two-story timepiece within a medieval Brick Gothic church.

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

Model Trains and Much More in Hamburg.

The site of a concentration camp where inmates were made to take part in one of the largest counterfeiting operations in history is now hauntingly empty.

Hamburgers are intensely proud of their tunnel beneath the river.

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

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

The bunker where Hitler took his own life is hidden under this deliberately ordinary parking lot.

This World War II bunker now survives as a documentation of the Nazi regime and war crimes.

A fascinating insight into daily life in the Eastern Bloc.

Thousands of coffin-like pillars make up this controversial Holocaust memorial.

The most visited, and possibly most controversial, museum in Germany.

An eerie, derelict amusement park in Berlin.

An Albanian monument to the Communism that nearly crushed the country is now a crumbling wreck.

This beautifully preserved Ottoman house is steeped in history.

Explore a traditional Albanian dwelling that pays tribute to the region's rich history.

The largest Roman amphitheater in the Balkans once held over 20,000 people, but managed to lay hidden for hundreds of years.

According to a local legend, this old castle could only be built after a woman was immured in the walls.

Bronzes and busts that once stood in the city's main squares are now relegated to a small hidden courtyard.

Once the fallout shelter of a dictator, this sprawling bunker is now a combined history museum and contemporary art gallery.

What happens when you cross a mayor and a painter?

The elliptical citadel resisted the advance of the mighty Ottomans several times, thanks to the military prowess of the "Dragon of Albania."

Hundreds of thousands of concrete bunkers crowd Albania long after the fall of Communism.