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.

The undercroft is a spectacular example of medieval Cistercian architecture.

These bleak 800-year-old ruins were once the royal residence of choice for hunting in Sherwood Forest.

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

A seaside town with no sea in sight.

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

Semi-precious Blue John stones have been mined in this cavern system for centuries.

Seat of the Duke and Duchess of Devonshire for centuries.

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

One of the U.K's earliest public water supplies is within the "plague village."

A gorge full of caverns where early humans lived alongside cave hyenas, giant mammoths and wooly rhinoceroses.

A repurposed railway tunnel with otherworldly acoustic characteristics.

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

Legend has it the famous Robin Hood would attend mass at this 12th-century Cistercian abbey in Sherwood Forrest.

This iconic Peak District ridge was once one of the busiest roads in medieval Britain.

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

A brick foundation and piles of listing building materials are all that remains of this World War II POW camp.

In the ancient Woolley Woods, an art project promises access to new worlds.