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

No matter what it might seem like on film, most scenes filmed on a plane are filmed at this LA studio.

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

A forest of phallic offerings found in a quiet corner of a hotel car park.

A treasure trove of pathological, forensic, parasitological, and anatomical specimens.

"The Most Wonderful Wonder that ever appeared to the Wonder of the British Nation."

Museum about life, death, and cannibalism in the Stone Age.

Ship-sized kinetic sculptural fantasy.

Competitors race wooden replicas of pungent blue cheese.

Traveling collection of amazing automata.

Once thought to be the mysterious work of a witchy prophetess, a well with unusual properties turns objects into "stone".

Fantastically decorated underground chambers built in the 1760s.

400-year-old garden, restored to beauty.

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

St. Mary's Asylum was isolated and abandoned before being converted into a Bed and Breakfast.

A collection dedicated to the treatment of disease, held in London's oldest hospital.

A showcase of canine neckwear spanning five centuries of doggie fashion and function.

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

Puzzles within puzzles hide a golden treasure in this hedge maze.

The world's smallest commercial theater is set up in what was once a urinal for Victorian men.

Long-secret natural history museum, featuring the skull of a "Terror Bird."

The gloomy ruins that inspired Bram Stoker to bring Dracula to life.

This witch statue remembers a time in England's history when fear trumped truth.

One of the largest sculpture collections in the U.K. features history's greats, from Bob Dylan to Galileo, in bronze.