Living trees form the structure of an open-air palace.

This German "living museum" is maybe a bit too immersive.

Oberweissbacher Bergbahn - a broad-gauged cable car capable transfering railcars.

Skeletons dressed in extravagant 18th century royal costumes cavort in the aisles of this German basilica.

Small museum dedicated to one of the founding fathers of modern astronautics.

An old department store turned Nazi prison turned artist commune.

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

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

Macabre astrological automaton clock dating to the late 1400s.

Synagogue built from the stones of Solomon's temple contains the golem of Prague.

Despite attempts by local police to discourage it, Beatles-inspired graffiti has been a means for artists to air grievances for decades.

Two stunning 17th-century libraries and a cabinet of curiosities.