One of just a few cities in the world to base their center of government on an island. Others: Paris and Osaka.

A memorial to the nearly 10,000 American soldiers laid to rest on the beaches of Normandy during WWII.

A daring D-Day assault by U.S. Army Rangers is commemorated atop the high cliffs of this strategic point.

This 1,300 year old monastery built atop a single rock was once only accessible depending on the whims of the tide.

These unique markers designate the route American forces took during the Liberation of France.

An effigy of a trapped paratrooper dangles from a Normandy church to commemorate one remarkable D-Day event.

The smallest port in France is named after the pirate who created it.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

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

This monumental work of art symbolizes the coming together of a previously divided city.

This platform is now a memorial dedicated to those who were deported during the Holocaust.

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

Reminders of the Battle of Berlin still scar the railway.

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

A derelict bit of transportation infrastructure hidden in the woods.

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

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

The skeletal frame of a decommissioned gas-pumping station offers breathtaking views of greater Berlin.

A whimsical and twisted animatronic monster tour beneath the streets of Berlin.

This tremendous timepiece was once the largest cuckoo clock in the world.

Along the banks of the River Rhine lies a park that seems unassuming, but beneath the surface lies a long and fascinating history.

This historic funicular system combines the old with the new while offering delightful views over the surrounding valley.

A unique showroom for bathroom fixtures featuring a giant toilet observation deck.

A Black Forest cuckoo clock theme park features one timepiece big enough to walk inside.