The Bristol Camera Obscura housed in an ancient windmill.

The view from this giant Stone Age toad is unexpectedly beautiful.

This 13th century castle is chock full of ghosts and impossibly rare cows.

The sculpture is made of more than 100,000 knives collected to raise awareness about violence.

This century-old grotesque has a mysterious history and may not actually be a rabbit.

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

Follow the original medieval paths that wind through this intriguing section of the city.

The ruins of an 11th-century Norman castle with a rare, perfectly circular shape.

A petite castle folly in the English countryside.

A midnight snack that lights up the night.

19th century museum with an eclectic mix of curiosities, from Egyptian artifacts to items on archery history to the skull of the world's oldest horse.

The ghosts of Britain's telecommunication past sit rusting away in a small village in England.

Ship-sized kinetic sculptural fantasy.

One of the few standing Roman lighthouses and a labyrinth of tunnels are a couple of the secrets at this historic castle.

The largest oak in England is said to have been the hideout of Robin Hood and his Merry Men.

A century-old tradition has culminated in a small but singular collection of feline effigies.

Huge concrete structures designed as an early warning system for Britain to detect enemy aircraft.

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

This Manchester laundromat is hiding something.

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

This Gothic Revival castle used as a shooting location for "The Secret Garden" and other films.

In Twickenham sits a small whitewashed castle that inspired Mary Shelley's 'Frankenstein.'

A community of artists and entrepreneurs seeks a simpler life on London's waterways.

Stonehenge has nothing on Castlerigg’s views.