Fantastically decorated underground chambers built in the 1760s.

In Twickenham sits a small whitewashed castle that inspired Mary Shelley's 'Frankenstein.'

A charming 17th-century alley is lined with secondhand bookstores and antiquarian shops.

The perfectly preserved underground rooms where Churchill plotted the war against Germany.

Winding paths and ramshackle mausoleums in the oldest "park cemetery" in London.

The popularity of Sherlock Holmes led to the creation of his fictional address, turning the orderly London street numbers askew.

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

The mysterious, fantastical woodland inspiration for "The Lord of the Rings."

Recreations of a Norse longhouse and boat on Shetland's northernmost inhabited island.

The location of this historic castle was inspired by a donkey.