The monster at the center of the Darwin Center Spirit Collection.

Following the trail of an old metro line, this scenic path is haunted by a creepy spriggan statue.

Collection dedicated to brands, packaging and advertising.

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

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

The remains of Crystal Palace Great Exhibition of 1851.

Remnants of a Victorian garden feature sitting in public woodland.

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

A hands-off space for graffiti artists to hone and display their skills.

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.

Hidden beneath the streets of London is a secret subway that only carried mail.

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

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

Kings Cross Station pays tribute to its role in Britain's best-selling book series.

A kaleidoscopic warehouse-maze of handmade neon signs.

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.

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

Built to hold the worst of the worst of the Nazi war prisoners.

Large-scale contemporary artworks tower over fields and lurk in forests around a Jacobean manor house.

Visible at low tide, this rusting vessel is one of the last surviving examples of the X-Class "Midget" submarines.

Looking strangely like Rome's Colosseum, this unfinished tower has dominated the skyline for over 100 years.

A long-abandoned relic of World War II.