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

Once thought to be the mysterious work of a witchy prophetess, a well with unusual properties turns objects into "stone".

A metal tree emits eerie, melodic notes on top of Lancashire's Crown Point.

Mysteriously stacked storefront paths give this medieval British town an iconic style like none other.

A church that bred legends, and served as an inspiration for the Da Vinci Code.

Eighty million natural history specimens call this gargantuan museum home.

One of the oldest scientific gardens in Britain, containing more than 13,302 plant species in its core collection.

Hear the quietest sound from across the dome.

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

The longest hedge maze in the world.

Northern Ireland's Brobdingnagian stepping stones.

Famously misunderstood wonder of the ancient world

The world's largest collection of witchcraft regalia.

Hidden beneath the streets of London is a secret subway that only carried mail.

The location of this historic castle was inspired by a donkey.

A castle in the Scottish Highlands has been continuously inhabited since the 1300s.

The last manually operated turntable ferry in the world.

Scotland's only funicular railway is also the United Kingdom's highest.

Now famous as the "Harry Potter bridge," this impressive concrete viaduct has long been an icon in its own right.

Ancient cliffs resembling a kilt on Scotland’s second-largest island emit an entrancing sound.

An ancient Scottish rock formation said to be the gravesite of a giant remains ensconced in legend and intrigue.

Islanders once used this dramatic, otherworldly landscape to hide their cattle from Viking raiders.

These fantastically named natural pools look like something out of a Scottish myth.

The sign announces the Scottish village's cosmic connections, as it's twinned with Glenelg, Mars.