The mysterious megaliths have enchanted and intrigued visitors for thousands of years.

Follow the original medieval paths that wind through this intriguing section of the city.

The ruins of an 11th-century Norman castle with a rare, perfectly circular shape.

This Gothic Revival castle used as a shooting location for "The Secret Garden" and other films.

Stonehenge has nothing on Castlerigg’s views.

This luxury shopping lane has been protected by its own tiny police force for over a century.

A red sandstone freestanding monolith rises out of the sea in northern Scotland.

These stark white cliffs were spat up by the sea and are slowly being retaken by it.

This beautiful "lagoon" is actually a toxic soup filled with cars, carcasses, and trash. When warnings couldn't stop people from going for a dip, the town dyed it black.

Public access to clean drinking water was an instant hit among the masses.

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

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

The London pub overlooks where the Mayflower was moored before setting sail for the New World.

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

19th-century scientists would make the pilgrimage here to verify the precision of their measuring sticks.

The pioneer of psychoanalysis spent the final year of his life here, still seeing patients on that famous couch.

The largest stone circle in the world has ended up bringing up more questions than it has answered.

Besieged by war, this castle ruin has crumbled into a peaceful picnic spot.

England's most notorious suicide spot.

A mysterious pair of mice eating a piece of cheese is London's smallest public sculpture.

The John Snow Memorial marks the epicenter of London's 1854 cholera epidemic.

This medieval sanctuary's tree-framed door looks like a portal to a mythical realm.

One of the oldest and certainly best preserved Cistercian abbeys still in existence.

A 6th-century stone lies at the site of the mythical battle waged between King Arthur and his nemesis Mordred.