Derelict chemical plant on the North Sea is a beautiful industrial ruin.

The Isle of Wight’s “Island Line” serviced by former London Underground trains from the 1930s.

This aging storage facility is the world's largest brick warehouse.

An abandoned 18th century manse looks like something out of an Indiana Jones movie.

Also known as "Robin Hood's tree," this tree became a famed location along Hadrian's Wall before it was cut down in an act of vandalism.

Abandoned ship reimagined as a street art canvas.

A quartet of rusting satellite goliaths are all that remain of a communication network that protected Britain from German and Russian air strikes.

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

Built during the Scottish boom in the oil industry, the village was never inhabited.

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

The ghosts of Britain's telecommunication past sit rusting away in a small village in England.

A hidden tunnel leads to an abandoned slate quarry that's now a secret swimming spot guarded by cliffs.

A fernery hidden by neglect is uncovered, and an ancient specimen along with it.

This hidden rooftop garden in downtown London offers a quiet respite from a bustling city.

This observatory within Europe's first dark sky park offers stunning views of the night sky.

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

The world's first underground farm is in a World War II bomb shelter beneath the streets of London.

Formed by the collapse of salt mines and later used for dumping industrial waste, these lakes are now part an unusual, biodiverse parkland.

Constructed for defense, this fort oversaw the dress rehearsal for one of the largest invasions in history.

Learn about the history of mining and making salt at this Cheshire museum.

The design of this seemingly translucent two-story tower in northwest Cambridge was inspired by an optical illusion.

One of the largest medieval barns in England and architecturally one of the finest.

A former Victorian swimming pool is now a tranquil and secluded park.

The last remains of a long-demolished estate.