Fifty years of contamination in Scotland's waters.

One English town's celebratory landmark spurred more trouble than anticipated.

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

One of England's most famous churches hides a pair of little known architectural treasures.

This striking observation tower shaped like a spinnaker sail is the newest icon in historic Portsmouth.

Hauled from the water's depths, Henry VIII's flagship is preserved in this capsule-shaped museum.

65 million-year-old chalk outcroppings mark the end of the Jurassic Coast.

Grotto replete with mystical designs laid out in glued shell mosaics.

One of the few standing Roman lighthouses and a labyrinth of tunnels are a couple of the secrets at this historic castle.

The largest oak in England is said to have been the hideout of Robin Hood and his Merry Men.

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

This giant geoglyph of mysterious origins is now the site of neo-pagan rituals.

England's oldest surviving hedge maze has been confusing visitors for over 300 years.

The longest hedge maze in the world.

Famously misunderstood wonder of the ancient world

England's most notorious suicide spot.

This Industrial Age architectural and engineering gem helps visitors and residents alike traverse Lisbon, “The City of Seven Hills.”

The best place in the world to buy tinned fish.

An awe-inspiring mosque in Morocco with one of the tallest minarets in the world.

There was a top secret plan during World War II to seal a group of soldiers inside the rock.

Single runway interrupted by a busy road that cuts across its middle.

Europe's largest community of crocodiles and alligators.

This 1,300 year old monastery built atop a single rock was once only accessible depending on the whims of the tide.

Bloodstains can still be seen in this medieval church where two medics saved lives on D-Day.