It's believed King John of England stayed at this 13th-century castle before riding off to sign the Magna Carta.

The ruins of a 12th-century Cistercian monastery can be found alongside World War II tank traps and pillboxes.

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

A whimsical cottage from the 1300s with a preserved Victorian-era post office inside.

Giant naked man on a hillside.

It is said the legendary wizard once lived in this sea cave beneath Tintagel Castle.

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

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

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

The world's first purpose-built motor racetrack was destroyed by the outbreak of two world wars.

The castle still holds traces of the abandoned Roman fort it was built atop.

Recently restored menagerie of Victorian-era beasts.

A former fisherman's hut deemed too small for habitation is now a delightful tourist draw.

A harem-inspired Moorish fantasy design in a Victorian-era Welsh castle.

The highest peak in Wales is said to be the final resting place of a giant killed by King Arthur.

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

A subterranean playground in an abandoned slate mine.

Local legend says Isaac Newton built this footbridge without any screws, bolts, or nails.

Numberless clock creates a meal of time for the dreaded, insectile Chronophage.

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

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

Six ravens are kept captive (but well-fed) at the Tower of London to prevent the fall of the Crown.

Eighty million natural history specimens call this gargantuan museum home.

Kings Cross Station pays tribute to its role in Britain's best-selling book series.