The commemorative stone column conceals a secret laboratory.

This marine reptile was discovered by one of the 19th century's greatest fossil hunters.

The Tudor-style cottage in the middle of the square is not quite what it seems.

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

Where condemned pirates met their grisly end at the gallows on the River Thames.

Revel in the Victorian splendor of the world's oldest eating establishment inside a museum.

The "lost friend” is the most famous of the six moai statues that were removed from Easter Island.

There's an exclusive Beefeaters pub hidden in the Tower of London.

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

A museum wholly devoted to juvenescence.

Richard III supposedly disposed of his nephews' bodies here in an effort to seal his claim to the throne.

Explore nearly 400 years of English middle-class home life.

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

This 1920s Dutch barge is now a floating bookstore.

This massive collection of British military artifacts includes the heartbreaking personal letters of the men in the trenches of WWI.

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

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

A cluttered and astounding collection of antiquities and curiosities.

Eighty million natural history specimens call this gargantuan museum home.

A 1,215-foot tunnel transports pedestrians beneath the River Thames.

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

This South London cemetery holds the remains of more than 15,000 people.

London's creepiest cemetery was once the site of dueling magicians and mobs of stake-carrying vampire hunters.

Featuring a meatless buffet fit for kings, this family-owned Zurich eatery is considered the oldest vegetarian restaurant in the West.