Every May, townspeople welcome summer with a bizarre pagan parade led by a man wrapped in garlands.

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

The music is over at the Ballhaus Riviera Ballroom, but the ballroom remains in haunting disrepair.

Fall down the rabbit hole into a surreal journey of human consciousness "from ass to soul."

An abandoned swimming pool decays on the outskirts of Berlin.

Puppet theater and museum holding a collection of more than 300.

A restaurant and observation deck built in a unique broadcasting antenna.

Berlin's old airport.

A 12th-century fortress containing some of Berlin's oldest buildings.

Super-heavy Nazi architectural experiment.

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

A wunderkammer of mysterious objects and stories.

A collection of abandoned typographic signs from Berlin and beyond.

A surreal museum of extraordinary industrial objects.

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

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

An eerie, derelict amusement park in Berlin.

The hidden "ballroom" under a mansion lake was built by a criminal who ate a cyanide pill during his trial.

Angels, demons, and tortured souls on a giant wall mural in a little church.

Both church and state get put to the torch in this annual festival in the "Bonfire Capital of the World."

It was once the longest continuously running cinema in the United Kingdom.

This tiny 1930s Art Deco airport is a beautiful remnant of a bygone era.

A hidden sculpture garden tucked within the middle of Brighton.

Stonehenge has nothing on Castlerigg’s views.