This beautiful Victorian ironwork masterpiece was built to keep London from smelling like poop.

Thanks to modern navigational tools we now know that the true prime meridian runs through a park next door.

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

A narrow passage next to a cafe leads to a courtyard exploding with murals, tags, and paste-ups.

Art and a pun, all in one.

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

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

A slice of central Asia in the middle of Berlin.

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

A fascinating insight into daily life in the Eastern Bloc.

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

A tour of underground Berlin takes you through WWII air raid shelters and tunnels used to smuggle people out of East Germany.

This futuristic German spa allows visitors to float in a pool of salt water while zoning out to underwater techno.

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

This private skyway is filled with art and was expanded explicitly so that Hitler could appreciate a river.

Renaissance hospital featuring a rotating door into which unwanted babies were dropped.

This bronze boar's snout has been rubbed to a golden sheen by visitors seeking good fortune.

The famous sculptor left his mark on this Italian wall in an internationally protected example of street art.

Some say this medieval church is where the poet Dante married his wife and also met the love of his life.

Vines grow up the metal bars in this public park created from an old machine factory.

Jean Tinguely's bizarre monster sculpture is hidden deep in a forest.

One of a series of no-purpose kinetic artworks by Swiss sculptor Jean Tinguely.

One hundred years ago this small house in downtown Zürich became the birthplace of the Dada movement.

An ancient rogue artist community hidden next to one of the world's most glitzy and glamorous cities.