Established in 1638 to battle the Black Death, Hortus Botanicus Amsterdam is a treasure trove of rare flora.

Museum preserving torture methods from the past.

A floating cat sanctuary on an Amsterdam canal.

An Amsterdam street lined with antique shops each one dedicated to a different obscure collection.

The world's only museum devoted to the wonders of fluorescence.

A remarkable cabinet of curiosities in an art space in the center of Berlin.

A sweet museum focused on beets.

Come stay at a live-in art installation.

The abandoned remains of this Victorian brewery hide crumbling bowling alleys and rusting industrial gear.

An old department store turned Nazi prison turned artist commune.

Blitzkrieg bop your way through Berlin's Ramones Museum.

A museum dedicated to a Cold War era sausage.

An abandoned swimming pool decays on the outskirts of Berlin.

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."

A state-of-the-art medical facility from the Imperial era is now a derelict ruin.

The largest free-standing aquarium in the world resides in a hotel lobby in Berlin.

A helicopter memorial commemorating what was once the only way to access this West Berlin exclave.

One of the largest numismatic collections in Europe fell victim to a huge theft.

A small hippo-shaped fountain in Berlin, Germany.

Largely overlooked, this little fountain on Museum Island is a whimsical tribute to a Prussian king nicknamed the “Fatty Flounder.”

A prime example of socialist modernist architecture, wrapped in a enormous fresco about the media.

An astonishingly accurate water clock that doubles as an hourly spectacle in this Berlin shopping area.

The world's first motorway was used as a racetrack until the late 1990s.