A hands-off space for graffiti artists to hone and display their skills.

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

This former quarry is now a vibrant labyrinth of magical in situ sculptures.

The sixth of London's "Magnificent Seven" cemeteries, and a source of unlikely inspiration to Beatrix Potter.

Human-made caves excavated to hide a secret society of wealthy pagans.

A 1,215-foot tunnel transports pedestrians beneath the River Thames.

Home to Hollywood history and a very special salt crystal.

Repository for more than 22 million pickled specimens.

This shop and gallery is a modern-day cabinet of curiosities, unassumingly positioned along an urban thoroughfare.