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

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

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

This ruined folly was originally built to honor a failed American state that would have become "Westsylvania."

This shell of a historic manor house on the Isle of Wight is said to be the most haunted site on the island.

This historic abandoned train station looks like a stop for ghost trains.

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

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

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

An abandoned tower once used to study the cosmos hides within a thicket of greenery.

The abandoned fishing village was swept right into the sea.

The abandoned funicular tunnel was a secret base for the BBC during World War II.

The dramatic remains of an abandoned farmhouse sit high on the edge of a remote hillside.

Britain’s highest medieval monastery is a remote ruin nestled at the head of a valley 1,240 feet above the sea.

A repurposed railway tunnel with otherworldly acoustic characteristics.

Abandoned for over 20 years, this Art Deco seaside swimming pool is a magnificent waste.

These ancient ruins were the final resting place of King Henry II's mistress.

A unique waterfall that some believe attracts the fairfolk.

Now famous as the "Harry Potter bridge," this impressive concrete viaduct has long been an icon in its own right.

A cluttered and astounding collection of antiquities and curiosities.

The largest of London's subterranean rivers and once a mad, bad center of London life.

Tiny effigies of the victims of Edinburgh's famous Anatomy Murders.

400-year-old garden, restored to beauty.

Spend the night in this formerly abandoned traditional Scottish village.