Solar observatory doubles as a daring display of Expressionist architecture, much to Einstein's chagrin.

An old tram depot transformed into a vintage car paradise.

This sprawling Jewish cemetery is one of the largest in Europe.

The 3,600-year-old archeological sensation is considered to be the oldest representation of the cosmos.

Walk inside a half mile long crevice right outside the town of Garmisch Partenkirchen.

Berlin's beloved bear is immortalized at the Museum für Naturkunde.

Twisted buildings adorn the banks of the Rhine river.

The world's tallest church tower reveals a spectacular view to anyone up to the task of climbing the daunting staircase.

Thousands of tourists and residents in Cologne affix "love padlocks" on the Hohenzollernbrücke Bridge to symbolize their affections.

Retirement home for giant obsolete machines.

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

This lurid German fountain plots the sad course of marriage from dating to death.

A Nazi concentration camp and Anne Frank's place of death.

This riverside restaurant has been serving customers since 1146.

This incredible stone temple is a monument to death, victory, and fantasy architecture.

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

The medieval institution is home to the precious treasure stolen in World War II in one of the greatest art thefts of the 20th century.

Germany's Glienicke Bridge has a shady history of clandestine meetings, espionage, and spycraft.

Model Trains and Much More in Hamburg.

Executed in 1401, Exhumed in 1878, Stolen in 2010.

Bursting forth from a historic German neighborhood, these day-glo palaces are now a bright fixture in the town.

The architect of this fanciful complex called it an "oasis for humanity and nature in a sea of rational houses."

Reminders of the Battle of Berlin still scar the railway.

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.