This elaborate Byzantine-style building was designed for a not-so-pretty purpose.

This small collection of rare books was uniquely locked up for safe keeping.

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

Remnants of cells from the most notorious London prison may lie in the basement of a rare Victorian Gin Palace.

This small museum in a former church crypt contains artifacts of the Elephant Man, Jack the Ripper and Florence Nightingale.

A collection dedicated to the treatment of disease, held in London's oldest hospital.

The remains of Crystal Palace Great Exhibition of 1851.

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

A vast overgrown cemetery, once known as one of London's "Magnificent Seven."

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

This impressive collection of skulls and bones was gathered by an ex-zookeeper who took advantage of a pig plague.

Medical history with an amazing, if frighting, collection of wax diseases on display.

A bizarre form of natural mummification was discovered in the church of this Frisian village.

Two gravestones clasp hands over the religious divide.

Unchanged for centuries, this medieval library keeps its books in chains.

Strange secondhand shop showcasing taxidermy and oddies

This homeless brass fox tugs at your heartstrings from the foot of a Stockholm bridge.