One of the last socialist halls still standing in the United States.

Some of England's last cave dwellers lived and worked within this huge cave.

The wreck of a B-29 Superfortress now stands as a memorial left in the moors.

The second-longest pier in the U.K. stretches a whole kilometer into the Irish Sea.

Britain's tallest megalith towers over the cemetery of a quiet English village.

Twice a day this ancient path disappears with the tides, leaving the Holy Island of Lindisfarne out to sea.

In the middle of a barren moorland, the remnants of a lost British Space Age stand like a 20th-century Stonehenge.

A magnificent winding road through a steep valley, with deep natural caverns at the bottom

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

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

The last working windmill in the U.K. that has eight sails.

The sanctuary seems to either float atop the water or sink into the dirt, depending on the water level.

A creepy tree with a local legend that inspired a nearby theme park ride.

A modern English garden of eccentric beasts, follies, and oddities.

At 1,732 feet above sea level, this spectacularly isolated yet surprisingly bustling bar is the highest pub in Britain.

A steep and winding road in the Yorkshire Dales passes by these deep natural potholes.

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

An 18th century monument regularly tagged with unsettling graffiti referencing a 1940s unsolved murder.

The last occupied troglodyte dwellings in England weren't abandoned until the 1960s.

A tiny art gallery in Sunnyside helps keep Portland weird.

This trio of neolithic stone monuments are fabled to be a king and his knights that were petrified by a witch.

This mysterious underground cave in Shropshire dates back to the 18th or 19th century.

The world's smallest commercial theater is set up in what was once a urinal for Victorian men.

A 200-year-old prison that now houses a peculiar crime museum.