Catacombs turned marketplace.

A 2000-year-old Roman amphitheater lies just below Guildhall Yard.

The curios of pharmacist and collector Henry Wellcome.

Rebuilt remains of a temple to Roman god Mithras.

The remains of the great moral philosopher reside in a university in London.

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

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 churchyard arbor is surrounded by hundreds of gravestones placed there by author Thomas Hardy.

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

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

This ornate Victorian marketplace was the setting for Diagon Alley and the Leaky Cauldron in the Harry Potter films.

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

The centuries-old obelisk may have inspired J. R. R. Tolkien.

This medieval sanctuary's tree-framed door looks like a portal to a mythical realm.

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

J.R.R Tolkien, C.S. Lewis, and other "Inklings" met at the Oxford pub to discuss the now legendary fantasy stories they were writing.

The names Lúthien and Beren can be found inscribed on the shared grave of the famous writer and his beloved wife and muse.

Ancient human remains unearthed around the iconic monument.

The first archaeological site discovered by aerial photography.

Famously misunderstood wonder of the ancient world

The oldest working mechanical clock in the world.

This unusual geoglyph was built as a warning so low-flying aircraft wouldn't scare the zoo animals.

Each spring this woodland floor is carpeted with purplish flowers as far as the eye can see.