Art and a pun, all in one.

This water-tower-turned-high-end-apartment building was once the site of an early Nazi concentration camp.

Berlin's natural history museum houses the world's largest mounted dinosaur and the late beloved polar bear Knut.

This classic restaurant features a gorgeous mirror-clad room.

An old department store turned Nazi prison turned artist commune.

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

The site of the famous Nazi book burning campaign of 1933 remembers its "Night of Shame".

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

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.

Scattered throughout London are ancient remnants of the city's former bounding wall.

In this cobwebbed old operating theater, you can practically hear the screams of the unanesthetized patients.

The curios of pharmacist and collector Henry Wellcome.

Museum dedicated to the UK's first charity for abandoned children, with keepsakes of the mothers who left them behind.

The remains of the great moral philosopher reside in a university in London.

An unusual round church in London with a Templar past.

The anatomical-pathological collection of a man who changed surgery.

A cluttered and astounding collection of antiquities and curiosities.

A naturally mummified 2,000-year-old man.

The signs of a long buried road can still be found hidden beneath a London sewer grate.

Final resting place of John Middleton "The Childe of Hale."

A hundred copies of Antony Gormley's naked body stare out across the water.

Six neolithic sandstone boulders remaining from a dolmen.

17th century puritan church with connections to the Salem Witch Trials.