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

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

A subterranean ice warehouse that has lain hidden beneath central London for over a century is now open to the public.

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.

Henry VIII's forgotten castle was built by the gunpowder-obsessed king to be defended solely by cannons.

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

This abandoned lock-up was saved because of its connection to a local football team.