This secluded walkway overlooks a magnificently wild London green space.

An eccentric 18th century naval officer built a ship's quarterdeck on his roof, the inspiration for Mary Poppins's "Admiral Boom."

A recently restored substation that dates from 1875.

At almost 1,000 years old, this is the oldest known door in all of Britain.

The niches over the western entrance of Westminster Abbey honor individuals from the 20th century who gave their lives for their Christian beliefs.

It holds a fabulously designed tribute to astronomer Edmond Halley.

This long-hidden space above Westminster Abbey now displays the battle gear of the legendary King Henry V.

The "beautiful" equation predicting the movement of all electromagnetic particles is engraved in front of Newton's tomb.

Soak up some local history in this restored Edwardian era swimming pool.

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

Home of one of history's most famous cartoonists just as he left it.

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

This statue in Holland Park might be one of London’s oldest outdoor statues, but its exact origins are unknown.

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

The first regular high-definition TV transmissions were made from this seemingly out-of-place mast located on one corner of a Victorian-era entertainment venue.

The London pub overlooks where the Mayflower was moored before setting sail for the New World.

The arching stretch of London's longest street holds many reminders of the area's maritime past.

The first tunnel to be dug beneath a river, repurposed as an art and museum space.

The "Heroine of Dunkirk" rescued over 7,000 Allied troops during the historic World War II evacuation.

The wooden telephone box hidden away in London's Piccadilly was the original prototype of the iconic kiosk.

The lab where the scientist made his groundbreaking discoveries is preserved on the basement floor of the Faraday Museum.

The real clothing store that inspired a fictional spy organization's front.

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

This knockout museum lies in a sleepy corner of London.