Abandoned boats decaying in the largest ship graveyard in mainland Britain.

A spectacular disused railway viaduct in a beautiful countryside nature reserve.

A sturdy relic of Britain's once crucial gunpowder industry is now a haunting Cornish ruin.

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

You can crawl inside this atmospheric 5,000-year-old tomb.

This ruined 15th-century hermitage is steeped in myth and mystery.

A hundred copies of Antony Gormley's naked body stare out across the water.

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

These ancient sunken lanes were naturally tunneled into the soft ground by countless footsteps.

Created hundreds of years ago, the magical follies and landscapes at this park were almost lost to time before being restored.

This former quarry is now a vibrant labyrinth of magical in situ sculptures.

This historic franken-chapel is the oldest wooden church in the world, at least part of it.

A reportedly haunted 14th century church is curiously facing the “wrong direction.”

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

The decaying ruins of Wales' first asylum for the mentally ill.

This hospital once pioneered the use of electroencephalograms, but fell into maltreatment, abuse, and eventual abandonment.

A rotting air force base is now home to rare birds and scarce plants.

The rust covering this old mine's abandoned buildings matches the red pigment it once produced.

This abandoned asylum in Wales might look haunted, but it's still beautiful.

There are hundreds of secret WWII bases hidden in British forests. Built to fight a Nazi invasion, they remained unknown for decades.

This mysterious hilltop collection of Druid carvings isn't quite what it seems.

The hidden "ballroom" under a mansion lake was built by a criminal who ate a cyanide pill during his trial.

A rare wooden coffin set vertically into the Gothic arch of an ruined church.

These medieval monastery ruins are surprisingly overlooked by most tourists.