Survival capsules find a second life as a unique hotel.

Go inside a revolutionary, cage-less zoo where 70 species of monkeys roam free alongside their human visitors.

These slanted cubic abodes are a creative if odd solution to a zoning pickle.

This cheese shop also houses a museum devoted to Dutch dairy.

Three connected pink triangles memorialize persecuted gays and lesbians throughout history.

The history and future of cannabis.

This 22-floor tower's Skydeck offers panoramic views of Amsterdam.

Famed for its pie, this eatery has a hidden tunnel that allowed Catholics to secretly walk to church during the Reformation.

This obscene artwork on the side of a newspaper office pokes fun at a rival paper's former editor-in-chief.

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

Home to 10,000 medical specimens including the remains of Rudolf Virchow's extensive collection of pathological specimens.

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

An eerie, derelict amusement park in Berlin.