The remains of centuries of copper mining appear like an alien landscape.

A simple but powerful tribute to the 20 victims of the 1692 witch trials.

A wonderfully eclectic Victorian aquarium lies in the basement of the Horniman Museum.

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

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

A flourishing garden with pigs, donkeys, goats, rabbits, guinea pigs, chickens, ducks, and sheep.

The world's first underground farm is in a World War II bomb shelter beneath the streets of London.

Lovers proclaim their unbreakable bond by leaving their names on locks fastened onto the Shoreditch fence in East London.

The monster at the center of the Darwin Center Spirit Collection.

Eighty million natural history specimens call this gargantuan museum home.

The beloved beast's taxidermy remains sit in the Natural History Museum's cafe.

A clock designed to run with perfect accuracy for 10,000 years.

The final resting place to 300 Victorian-era pets hides inside the city park.

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

This hidden green space is the city's second largest conservatory.

In this cobwebbed old operating theater, you can practically hear the screams of the unanesthetized patients.

Rebuilt remains of a temple to Roman god Mithras.

An incarceration museum on the spot of possibly the oldest prison in England.

This historic building displays the remains of a victim of the devastating 14th-century plague.

The gigantic skull of a long-extinct species that once roamed the forests of England and Ireland.

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

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

London's last remaining public soapbox site has seen speeches from Karl Marx, Vladmir Lenin, and George Orwell.

This collection of illusory paraphernalia has been culled from the history of London's premier magician's club.