A naturally mummified 2,000-year-old man.

A clock designed to run with perfect accuracy for 10,000 years.

An small and easily overlooked archaeology museum chock full of Egyptian artifacts.

The Metropolitan Police refurbished the blue box (perhaps not coincidentally) the same year "Doctor Who" returned to TV screens.

A network of concealed passageways lies within a busy London Underground station.

The anatomical-pathological collection of a man who changed surgery.

The curios of pharmacist and collector Henry Wellcome.

Catacombs turned marketplace.

Rebuilt remains of a temple to Roman god Mithras.

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

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

One part local history, 99 parts gruesome haunted house.

A tongue-in-cheek arcade where the games are based on everyday life.

Eighty million natural history specimens call this gargantuan museum home.

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

This collection of illusory paraphernalia has been culled from the history of London's premier magician's club.

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

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

One of the few remaining casualties of the London Blitz, this destroyed church has become an enchanting public garden.

London's creepiest cemetery was once the site of dueling magicians and mobs of stake-carrying vampire hunters.

This ornate Victorian marketplace was the setting for Diagon Alley and the Leaky Cauldron in the Harry Potter films.