Rebuilt remains of a temple to Roman god Mithras.

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

A subterranean ice warehouse that has lain hidden beneath central London for over a century is now open to the public.

This London pub hides a peculiar secret: a recreation of the rooms shared at 221b Baker Street by Sherlock Holmes and Dr. Watson.

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

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

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

A kaleidoscopic warehouse-maze of handmade neon signs.

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

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

A 16th-century horror show built in a lovely Italian garden.

Richard III supposedly disposed of his nephews' bodies here in an effort to seal his claim to the throne.

This artist's home turned gallery/museum preserves the creator's love of "Eastern" influences.

The cedar tree in Highgate Cemetery earned its title by accident.

A musical composition 1000 years in length plays at the Trinity Buoy Wharf in London.

This luxury shopping lane has been protected by its own tiny police force for over a century.

The childhood home of Earth's alien chameleon is a humble Brixton flat.

Revel in the Victorian splendor of the world's oldest eating establishment inside a museum.

A relic of Victorian grandeur hides beneath a busy South London road.

This landmark church concealed a crypt packed with bones that was discovered thanks to the London Blitz.

This secluded walkway overlooks a magnificently wild London green space.

Remnants of cells from the most notorious London prison may lie in the basement of a rare Victorian Gin Palace.

A historic arboretum and non-conformist, non-denominational park cemetery.

This London plaque marks the spot where David Bowie's famous alien made his debut.