Henry VIII's forgotten castle was built by the gunpowder-obsessed king to be defended solely by cannons.

The elegant structure of this 19th century railroad bridge creates an illusion of infinity.

A slightly surreal menagerie of structures that were lovingly spared from demolition and reconstructed in a field.

One of the largest megalithic complexes in England, which local legend holds is a wedding party turned to stone by the Devil.

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

A 600-year-old mini shrine guarded by a sword-wielding knight hides in a crumbling cliff face.

The storied English village that pretended to be insane inspired NYC's nickname and the fictional namesake in the DC Comics universe.

This 2,000-year-old tree inspired the nursery rhyme "Rock-a-bye Baby."

This centuries-old hotel hides a network of secret cellars and passages once used by smugglers.

What was once England's second-richest abbey is now a haunting ruin.

It's possible to walk inside one of the largest Neolithic tombs in Britain.

Isaac Newton's former home, where the famous apple tree still stands.

The first archaeological site discovered by aerial photography.

Rare collection of medieval books under lock and key.

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

Perhaps the only prehistoric monument with its very own public bus stop.

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

This enormous secondhand bookstore inside a Victorian train station sparked the "Keep Calm and Carry On" craze.

A group of glacial erratic boulders are improbably balanced on white limestone pedestals.

An enigmatic natural rock formation with a manmade passage cut through the center.

This marine reptile was discovered by one of the 19th century's greatest fossil hunters.

Abandoned boats decaying in the largest ship graveyard in mainland Britain.

This former quarry is now a vibrant labyrinth of magical in situ sculptures.

The Origin of On the Origin of Species.