This centuries-old hotel hides a network of secret cellars and passages once used by smugglers.

Henry VIII's forgotten castle was built by the gunpowder-obsessed king to be defended solely by cannons.

The forest that inspired Winnie-the-Pooh's Hundred Acre Wood can be found outside London.

A beautiful ruin of a 14th-century Plantagenet castle built by a medieval mercenary.

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

Its collection includes a broad array of social, geographic, graphic design, and political history.

An architectural oddity hides in plain sight on this iconic London bridge.

One of the few remaining examples of 19th-century London’s attempt to clean up its reputation.

This beautiful deer park was built so King Charles I and his court could go hunting while escaping a deadly plague outbreak.

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

A relic of Victorian grandeur hides beneath a busy South London road.

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

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

The largest of London's subterranean rivers and once a mad, bad center of London life.

Eighty million natural history specimens call this gargantuan museum home.

The quaint little store that is said to have inspired a famous Dickens novel was only given its name after the book was released.

Rebuilt remains of a temple to Roman god Mithras.

A hands-off space for graffiti artists to hone and display their skills.

This ornate Victorian marketplace was the setting for Diagon Alley and the Leaky Cauldron in the first ‘Harry Potter’ film.

These ornate arches show how the course of the River Thames has changed.

These official units of measurement—including chains and perches—lie hidden beneath tourists' feet in a popular London hub.

An unusual ode to the late Irish playwright, complete with a squiggly bust and coffin-shaped bench.

A living memorial to the trees London lost during the Great Storm of 1987.

The medieval woodcut-style artwork chronicles life in medieval London.