The history and future of cannabis.

Where once there was a train station bathroom, there is now this German burger joint.

A traditional U-Bahn station in Berlin gets a string of rather untraditional benches.

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

This conical hill was built as a testing ground for an engineer known as the Glider King.

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

A rare water-powered funicular, it uses a huge tank of water and gravity to do its work.

Originally envisioned by King Ludwig II to rival Versailles, Herrenchiemsee's "New Palace" remains half-gilded for lack of funds.

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

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

Berlin's old airport.

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

Daily jousts and dancing barrel makers in Munich's mechanical clock.

Soaring over 6,000 feet in the Bavarian Alps, this beer garden was once Hitler's 50th birthday present.

A tree-like building perches on its trunk in the Steglitz neighborhood of Berlin.

The prototype for all Nazi concentration camps.

An abandoned NSA listening post on Berlin's "Devil's Mountain."

A small but immensely extravagant palace built by the "Night King."