This astonishingly geometric cave has inspired everyone from Jules Verne to Pink Floyd.

A carved bench marks the Scottish cave that inspired the classic adventure novel "Treasure Island."

This amazing trail among the many waterfalls around Ingleton has been enchanting visitors since 1885.

The remains of the wrecked steam trawler can be found on the beach at low tide.

Constructed from recycled wrought iron railroad tracks, it's been described as the most beautiful seaside pier in England.

These mysterious mazes carved on the rock may be up to 4,000 years old.

A stretch of land where the sour-sweet vegetable is cloaked in darkness and grows so fast you can hear it crack, squeak, and pop.

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

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

Legends say that this small island was the final resting place of the Welsh saint of lovers.

This centuries-old hotel hides a network of secret cellars and passages once used by smugglers.

The farthest northwesterly point of the British mainland is one of the most remote places in the Scottish Highlands.

The oldest library in Scotland was built from the remains of a church to hold a churchman's library.

One of the oldest libraries in England, and one of the last of the great medieval chained collections.

One of the largest megalithic complexes in England, which local legend holds is a wedding party turned to stone by the Devil.

The medieval legend behind this holy well was one of the inspirations behind "Alice's Adventures in Wonderland."

This 2,000-year-old tree inspired the nursery rhyme "Rock-a-bye Baby."

A group of glacial erratic boulders are improbably balanced on white limestone pedestals.

This enormous secondhand bookstore inside a Victorian train station sparked the "Keep Calm and Carry On" craze.

A labyrinthine underworld of tunnels and caverns hides beneath the city.

This long-distance walking route follows the Prime Meridian line as it passes through England.

A sea cave with a waterfall and Viking past

Abandoned boats decaying in the largest ship graveyard in mainland Britain.

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