Abandoned in the United Kingdom

This decaying, grandiose tweed mill once housed the Norwegian Army in exile.

This ruins of an abandoned Victorian-era mental health facility.

After several centuries as the home of coastal defenses, this island is full of history—and maybe ghosts.

A magical woodland theatre in Wales reclaimed by nature.

The ruinous former neo-classical mansion was built for Thomas Fraser of Strichen.

An abandoned Yorkshire castle that is hidden in plain sight.

Once a training ground for Olympic athletes, this artificial ski slope has fallen into ruin after a fire in 2012.

Now in ruins, this castle stood for centuries and saw a number of gruesome events.

A 13th-century stronghold that has fallen into ruin.

The ruins of a 19th-century corn mill are haunted by a malevolent cave-dwelling spirit.

The ruins of a 12th-century seaside castle on the southwest coast of Scotland.

The church and nearby castle are all that remains of a medieval village, mysteriously abandoned.

The half-finished remains of what would have been Scotland’s biggest piece of landscape art.

A mysterious, weather-beaten bus lies on the coast of Harris, enticing the curious to investigate.

A once extravagant mansion, now reduced to ruin.

A long-abandoned relic of World War II.