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

Thanks to modern navigational tools we now know that the true prime meridian runs through a park next door.

London's old-school healing garden.

After nearly 60 years, there's still a bear at Paddington Station looking for help.

Abstract dinosaur models in London.

A network of concealed passageways lies within a busy London Underground station.

The lab where the scientist made his groundbreaking discoveries is preserved on the basement floor of the Faraday Museum.

This elaborate Byzantine-style building was designed for a not-so-pretty purpose.

Shiny Brutalist box commemorates a pioneer of electricity and houses a railway transformer.

A unique tribute to the millions of animals who served and died for the British military.

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

Wedged between two buildings at the Great Ormond Street Hospital is this secret music installation.

Catacombs turned marketplace.

A historic house left in "dramatic still life."

An alleyway plaque is all that remains of the independent Texas' envoy that forgot to pay their rent for over a century.

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.

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

Hidden beneath the streets of London is a secret subway that only carried mail.

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

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.

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