These centuries old gardens have been restored to their 17th century condition.

An ancient woodland that inspired a young J.R.R. Tolkien.

This ornate English estates "Prodigy House" still bears the cannonball marks of civil war.

A historic London pub with prison cells in the cellar and a "spy room" on the second floor.

A little slice of Japan and its aesthetics in London's Holland Park.

Rebuilt remains of a temple to Roman god Mithras.

Famously misunderstood wonder of the ancient world

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

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

Several plaster noses are hidden in plain sight around London's Soho neighborhood.

The world's largest collection of witchcraft regalia.

The only university zoological museum in London houses extinct animals, bizarre natural history specimens, and a Micrarium of microscopic creatures.

This 1920s Dutch barge is now a floating bookstore.

A subterranean ice warehouse that has lain hidden beneath central London for over a century is now open to the public.

A tongue-in-cheek arcade where the games are based on everyday life.

The sign at the garden gate reads: "These Plants Can Kill."

Eighty million natural history specimens call this gargantuan museum home.

Banksy gives themself artistic license with this piece of London street art.

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

The perfectly preserved underground rooms where Churchill plotted the war against Germany.

The mysterious, fantastical woodland inspiration for "The Lord of the Rings."

This shop and gallery is a modern-day cabinet of curiosities, unassumingly positioned along an urban thoroughfare.

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 Harry Potter films.