The world's oldest family-run magic shop is hidden beneath a bustling London thoroughfare.

"We gonna rock down to Electric Avenue, and then we'll take it higher..."

More than a million titles fill the labyrinthine shelves of this prestigious private library.

Tucked away in the Tower of London is the weapon once used to execute high-profile prisoners.

The library houses an incredible collection of some of the world's most impressive books and manuscripts.

Taxidermied animals galore, by appointment only.

Tombstones and enigmatic inscriptions hide within a vault beneath a popular London arts venue.

A labyrinth hides in plain sight at each of the city's 270 Tube stations.

A plaque hangs near the execution place of the Scottish Independence leader famously depicted in "Braveheart."

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

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

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

London's last remaining public soapbox site has seen speeches from Karl Marx, Vladmir Lenin, and George Orwell.

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

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

The television series' iconic giant foot was borrowed from this classical painting.

Scattered throughout London are ancient remnants of the city's former bounding wall.

The remains of Crystal Palace Great Exhibition of 1851.

An alleyway plaque is all that remains of the independent Texas' envoy that forgot to pay their rent for over a century.

An incarceration museum on the spot of possibly the oldest prison in England.

A historic London pub with prison cells in the cellar and a "spy room" on the second floor.

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

The site of London's first coffee house has been serving refreshments of one kind or another for 360 years.

Remnants of a Victorian garden feature sitting in public woodland.