The John Snow Memorial marks the epicenter of London's 1854 cholera epidemic.

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

Abstract dinosaur models in London.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

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

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

This South London cemetery holds the remains of more than 15,000 people.

Real bones which are said to have belonged to a Polish dragon.

Shakespeare, David Bowie, Dr. Who, the Saxons, Druids and Romans are all claimed to have all made their mark on these massive man made tunnels.

This charmingly homemade amusement park has been growing for 40 years.

Once in a state of dilapidation, this candy-inspired fortress is now being revived.

The sign at the garden gate reads: "These Plants Can Kill."

This 13th century castle is chock full of ghosts and impossibly rare cows.