Traditional Danish spot where the schnapps are flowing and the smørrebrød is loaded.

The old observatory in Copenhagen has a spiral corridor used as a racetrack.

Once a meeting point for great thinkers, and the midpoint of the country.

Climb to the top of its spiral spire for spectacular views of Copenhagen.

Hamburg's first legal sex work is relegated to a gated street that still does not allow pedestrian women.

Hamburgers are intensely proud of their tunnel beneath the river.

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

One of the oldest wine cellars in Germany is now a restaurant beneath Bremen's town hall.

Designed to resemble foreign architecture, this mosque-looking structure was used to pump water to a royal fountain.

The "Prussian Versailles" that is as glorious today as when it was built.

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

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

Super-heavy Nazi architectural experiment.

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

At one of Berlin’s oldest churches, visitors can place mosaic tiles to help restore a medieval mural.

One of downtown Berlin's last reminders of its Communist past.

A fascinating insight into daily life in the Eastern Bloc.

Beneath the impressive baroque cathedral that rises from the center of Berlin lies the largest collection of Prussian royals in the world.

Tiny memorials honor individual victims of the Holocaust.

A memorial in the Tiergarten is a reminder of the suffering inflicted on homosexuals by the Nazi regime.

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

Cold war icon and onetime "hole" in the iron curtain.

A slice of central Asia in the middle of Berlin.

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