A memorial for public executions that dates back to the 14th century.

A masterpiece of Art Deco architecture hidden in plain sight in West London.

This small, round building is the entrance to a bomb shelter built in anticipation of World War II.

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

The world's longest continuously running show has played at this small West End theater since 1974.

Inside a London bookstore, a fireplace that once belonged to the illustrator responsible for a famous set of tarot cards.

A tribute to an explorer and naturalist often overlooked by history.

Before becoming a poet John Keats studied here to become a surgeon.

A haunting monument dedicated to the Royal Naval Air Service and the Fleet Air Arm.

This 19th-century Turkish bath house survived the Blitz of London and is now an events venue.

Designed by the architect who also had a hand in crafting the Westminster Abbey and Bristol Cathedral.

Originally meant to hold a statue of King William IV, this support sat empty for years. Today, it hosts a rotating cast of public artwork.

This hydraulic power system in London was, at one time, seen as a rival to electricity and the last of its kind to shut down.

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

This plaque in one of London's oldest public hospitals commemorates the first meeting of two of Britain's most famous literary heroes: Sherlock Holmes and Dr. Watson.

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

A pair of club-wielding guardians stand watch over London's first public clock to feature a minute hand.

This hospital helped pave the way for treatment that drove down child-mortality rates in 19th and 20th centuries.

A secluded green oasis amidst the towering skyscrapers, bears an unusual moniker that reflects one of the city's oldest guilds.

Down a pint of ale where the Bishop of Ely's servants slept in 1546.

These marks in Myddelton Passage aren't your run-of-the-mill vandalism, and they weren't made by your typical vandal.

A wellspring of creativity in an already artsy East London neighborhood.

Formerly known as Saville Theatre, this mid-20th-century entertainment hub includes an ornate frieze.

Order bagels and lox from an iconic Jewish delicatessen with nearly a century of history behind it.