The burial place of an obscure North African saint was turned into a macabre body preservation factory for the 17th-century Neapolitan elite.

Erotic art covers the walls of the largest ancient pleasure palace.

The walls and streets of the ancient city are peppered with penises.

This amazingly well-preserved villa just outside Pompeii boasts rare examples of ancient Roman paintings.

Legend says the people of Wiltshire got their "Moonraker" nickname from this small pond.

A winding cave grotto walkway built to provide employment for veterans after World War I.

The world's first underground farm is in a World War II bomb shelter beneath the streets of London.

The only medieval bridge in Britain with its defensive tower still in tact.

Detailed sandstone carvings show an array of symbolism and adorable animals.

Legend says this demonic carving inside a medieval cathedral was one of Satan's minions.

Discovered on a shipwreck after more than 400 years, this Renaissance ratter tells a very waggly tale.

Angels, demons, and tortured souls on a giant wall mural in a little church.

The only university zoological museum in London houses extinct animals, bizarre natural history specimens, and a Micrarium of microscopic creatures.

The last moments of the ill-fated Pompeiians, frozen forever in plaster.

Beasts and branches swirl in sandstone carvings, interrupted by one strange creature.

This marine reptile was discovered by one of the 19th century's greatest fossil hunters.

Hauled from the water's depths, Henry VIII's flagship is preserved in this capsule-shaped museum.

A wonderfully eclectic Victorian aquarium lies in the basement of the Horniman Museum.

A measuring mishap led to these artificial stone ladies losing their stomachs.

Giant naked man on a hillside.

A labyrinth hides in plain sight at each of the city's 270 Tube stations.

A long, winding trek rewards you with a gorge so captivating it inspired a painting in the Tate.

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

Harry Potter once visited this massive limestone cliff, which was carved by an ancient glacial river.