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

Pop culture has helped to keep this iconic British building from being destroyed.

London's old-school healing garden.

Chelsea's soldiers were given strict orders when crossing this historic bridge.

The sixth of London's "Magnificent Seven" cemeteries, and a source of unlikely inspiration to Beatrix Potter.

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

One of the greatest movie directors of all time lived and worked in this London flat from 1926 to 1939.

This hidden rooftop garden in downtown London offers a quiet respite from a bustling city.

A little slice of Japan and its aesthetics in London's Holland Park.

This pub was 238 years old when it decided to revamp its image: It started serving Thai food.

Eighty million natural history specimens call this gargantuan museum home.

An ornate and disused early 20th-century building has been given new life as a fully operational structure, complete with offices, oyster bar, and a furniture retailer.

This medieval church tower has maintained its clockworks since the 16th century.

Once a train station along the Great Eastern Railway this vibrant coffee shop and bar is where members of London’s creative class mingle.

A recently restored Shoreditch landmark with ties to Jack the Ripper.

A museum wholly devoted to juvenescence.

This East End pub gained notoriety as the site where gangster Ronnie Kray publicly shot a rival.

The watery entrance for condemned prisoners heading to the Tower of London is still visible along the Thames.

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

Six ravens are kept captive (but well-fed) at the Tower of London to prevent the fall of the Crown.

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

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

The Great Fire of London and the regulation of one-way streets both started in this alley.

The 2,000-year-old beam is tucked within the pedestrian entrance to the old London Bridge.