This antique prison is a tourist attraction with a sordid past.

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

This one has sailed five times as far as Sir Francis Drake's famous ship.

These morbid carvings remind churchgoers of the inevitability of death.

This former abandoned hospital, a complex of stunning 19th century buildings, once housed 2,000 psychiatric patients.

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.

These lovely Turkish-styled baths were brought back to life after winning a reality show competition.

Ship-sized kinetic sculptural fantasy.

Although it appears ancient and mysterious, the quirky folly was actually built 200 years ago by an eccentric estate owner.

This romantic, decaying 13th-century ruin on the edge of Sherwood Forest is reputedly one of England's most haunted places.

On this wooded path, a stained-glass window creates a spellbinding forest cathedral.

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

A relic of Victorian grandeur hides beneath a busy South London road.

An English artist has turned an unassuming ex-council house into a time-lost house of mystery.

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

Colin Stokes "got a bit carried away" and built a castle that looks like something out of Tolkien.

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

Stonehenge has nothing on Castlerigg’s views.

These stark white cliffs were spat up by the sea and are slowly being retaken by it.

An abandoned tank sits in an empty London lot as a symbolic middle finger to local city planners.

Grab a cuppa at England's first and only domestic tea plantation.

This secluded walkway overlooks a magnificently wild London green space.

A house of bones — but nobody is quite sure to whom they belong.

Shakespeare, David Bowie, Dr. Who, the Saxons, Druids and Romans are all claimed to have all made their mark on these massive man made tunnels.