This giant geoglyph of mysterious origins is now the site of neo-pagan rituals.

This aluminum “stairway to heaven” has impaled at least a couple of birds.

The sculpture of the deceased cockatoo flops atop its personal plinth.

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

This massive metal scallop is a tribute to an English composer who once walked across this beach.

A strange and ancient landscape hides the dark, cavernous remains of a 5,000-year-old flint mine.

Spanish architects used seized Muslim gravestones to rebuild parts of the fortress.

The nearly 200-year-old folly has a secret spiral staircase hidden in one of its pillars.

Huge winged monument in the United Kingdom.

This collection of ancient structures makes up part of the largest group of prehistoric earthworks in Britain.

Stonehenge has nothing on Castlerigg’s views.

A group of college students hauled a desk up a mountain more than 40 years ago. The notebooks inside have become a makeshift time capsule.

The highest peak in all of England is plagued by dangerously fickle climate shifts.

This enchanting Victorian estate was home to the world's first hydroelectric power generator.

Artists have long been drawn to these atmospheric 12th-century ruins.

This Gothic castle-like portal is a testament to the amazing craftsmanship of the navvies who built the railway tunnel.

Makers and sellers of the original and finest York Ghosts.

This spectacular bridge supported by two gigantic hands looks like something out of a fantasy universe.

This bridge is embedded with a giant steel dragon that breathes fire from its mouth.

The gnarled remains of an exploded German bunker from World War II sit along a breathtaking fjord.

This haunting monument honors the victims of 9/11.

The cheese slicer may be a Norwegian invention, but the biggest ones in the world are found in Sweden.

The holes in the world's longest golf course are in a series of different towns.

The view from this giant Stone Age toad is unexpectedly beautiful.