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.

This foolish Victorian sea fort was converted to a deluxe hotel.

A miniature Italianate fantasy village on the coast of Wales and the set of ITC classic "The Prisoner."

Three bridges straddle a stream, one stacked upon the other.

These ancient sunken lanes were naturally tunneled into the soft ground by countless footsteps.

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

Western Europe's only representation of a Roman goddess still in its original location sits in an unassuming park.

England's most notorious suicide spot.

The largest cave chamber in Britain—big enough to fit a whole cathedral inside.

This iconic 1,000-year-old medieval castle is a favorite of the film industry, most notably as the location for Hogwarts in Harry Potter.

A rocky sea serpent hides caves, blowholes, and a spectacular natural bridge.

Created hundreds of years ago, the magical follies and landscapes at this park were almost lost to time before being restored.

A unique waterfall that some believe attracts the fairfolk.

The largest greenhouse in the world is home to over one million types of plants.

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

A island reachable by a causeway at low tide is possibly one of the earliest Western European locations to be identified in text.

A fantastic castle rumored to be the birthplace of King Arthur.

An unusual round church in London with a Templar past.

The longest hedge maze in the world.

Famously misunderstood wonder of the ancient world