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

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

The popularity of Sherlock Holmes led to the creation of his fictional address, turning the orderly London street numbers askew.

Only a few pieces remain of the structure that carried people and goods across the Thames for some 600 years.

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

The fierce beast perches atop a pedestal marking where the historic City of London gates once stood.

This coffee shop lies hidden beneath a historic church.

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

An easily overlooked stretch of ornate window fronts and gaslight lamps that could be right from the pages of Dickens.

A 300-year-old tea shop that brought tea to the English people, not to mention the Queen herself.

A charming 17th-century alley is lined with secondhand bookstores and antiquarian shops.

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

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

The commemorative stone column conceals a secret laboratory.

This one has sailed five times as far as Sir Francis Drake's famous ship.

The bridge is a secret gallery of discarded gum that has been transformed into miniature masterpieces.

The famous polar explorer stands outside the Royal Geographical Society's headquarters.

A statue marks the exact spot where The Boy Who Never Grows Up made his first literary appearance.

This bridge's unique architecture honors nautical heritage and encourages self-awareness.

This grisly exhibit houses skeletons and weapons from a devastating 14th-century clash.

A man has revenged his true love's betrayal through tears and stone genitalia.

Hidden in plain sight, Sweden's official ordnance datum is now abandoned.

A plaque marks the house in Stockholm where the French philosopher René Descartes lived up until his death.

Now a hotel, this former bank was the site of a robbery that spawned a psychological phenomenon.