This mysterious hilltop collection of Druid carvings isn't quite what it seems.

A folly built to satisfy a gentleman's bet that he could drive his horses through the eye of a needle.

The whimsical steel spider lurking in the shadows of this suspension bridge shows that engineers can have a sense of humor.

Long-secret natural history museum, featuring the skull of a "Terror Bird."

Though much of the castle was robbed of its stones, the underlying earthworks are among the best-preserved in England.

There's a strange stone hoodoo towering atop a wooded hillside and no one is quite sure how it got there.

Eyam took steps to quarantine themselves and keep the plague from spreading.

This crumbling folly looks like an enchanted left over from Middle Earth.

This logic-defying 16th-century Tudor manor still stands to the delight and astonishment of onlookers.

This stone throne invites adventurers to observe breathtaking views of the Peak District.

This tiny little pool is said to be home to a malicious mermaid named Jenny Greenteeth.

These unique stepping stones hug a river's edge to take hikers on a journey through a limestone gorge.

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

This haunting stone chasm is a hotbed of mossy rock and English legend.

This landmark Victorian folly rewards visitors with spectacular views over the Peak District.

Once the largest unsupported dome in the world, beating out the Pantheon and St Peters in Rome.

A metal tree emits eerie, melodic notes on top of Lancashire's Crown Point.

A stone obelisk towering over the surrounding countrysides beckons hikers across the rolling moors.

Giant statue of a disembodied head.

One of the largest mechanical models of the solar system in the world.

At night, the enormous sculpture looks like a UFO hovering above the English hills.

This dreamy street will transport you to wintertime in Victorian England.

Dating back almost 400 years, the oldest public collection library in the United Kingdom was once the study hall of Karl Marx.

Hidden on the urban banks of a Manchester river are a series of abandoned waterside industrial sites.