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

This spectrum of a star was observed by one of the world's most accurate spectrographs. 

A historical observatory still in use by modern astronomers.

A quaint Russian village in the middle of a German metropolis.

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

The site of the original experiment that would be used to disprove the theory of luminiferous ether.

One of the largest refracting telescopes in the world, and the first built specifically for studying astrophysics.

Gardens representing parts of Asia, Europe, and the Mid East are tucked away among the Soviet-style buildings in East Berlin.

A museum dedicated to the history of a terrifying secret police is now held in their former headquarters.

A museum in the building where Nazi Germany signed its surrender tells the story of World War II from the Soviet perspective.

Berliners converted a bombed-out, disused lot into a community-run urban farm with its own cafe and bar.

After fleeing the Syrian civil war, chef Malakeh Jazmati began serving exceptional renditions of her homeland's cuisine in Berlin.

A towering monument to war, located on a beautifully peaceful hill.

On the Spree bank, discover one of the last reminders of a symbolic wall that divided, and was torn down by the people.

This public observatory is home to the "celestial cannon," the longest pointable telescope in the world.

For patriotic Russians, this memorial honoring the Soviet soldiers who died liberating Berlin in 1945 is the most sacred location outside of Russia.

Tiny memorials honor individual victims of the Holocaust.

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

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

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

The walls of Germany's Parliament still show the scars of the Red Army takeover in World War II.

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

A fascinating insight into daily life in the Eastern Bloc.

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