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

Surreal riveted sea forts once protected the Kent shores from German attack.

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.

Pop culture has helped to keep this iconic British building from being destroyed.

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

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

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

The abandoned fishing village was swept right into the sea.

What was once England's second-richest abbey is now a haunting ruin.

This abandoned gun tower was built to defend the River Thames from a French naval attack.

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

An abandoned World War II tank left to rust in the downland.

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

One of the earliest large-scale "hyper" roofs in the U.K. is now a derelict roadside attraction.

Abandoned for over 20 years, this art deco seaside swimming pool is a magnificent waste.