19th century tunnels burrowed under Liverpool.

A trio of giant megalithic stones in the middle of a golf course.

One of the figures in this Celtic sculpture continues to puzzle archaeologists.

One of the world's oldest trees comes with a Welsh legend intertwining it with a spirit prophesying death.

This strange moor has a song written about it, Bronze Age carvings, and an alien sighting.

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

A village on the east coast of England that has almost completely eroded into the North Sea.

The world's largest prehistoric copper mine had 30,000 animal bones scattered throughout the maze of passageways.

This logic-defying 16th-century Tudor manor still stands to the delight and astonishment of onlookers.

These legendary stone steps were once used to haul coffins up the rockface.

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

A circle stone within a stone circle.

Local legends say that fairies used to dance in the moonlight here and invite handsome young men into their grottoes.

The strange behavior of a tween led to allegations of witchcraft and a curse being placed on anybody within earshot.

Enter the world under the hill at this ancient UK burial chamber.

Museum dedicated to the UK's first charity for abandoned children, with keepsakes of the mothers who left them behind.

These ancient sea caves hold Britain's highest concentration of Pictish rock carvings.

Modern megaliths form this work of cosmic, Celtic landscape art.

This romantic, decaying 13th-century ruin on the edge of Sherwood Forest is reputedly one of England's most haunted places.

The granddaddy of English geoglyphs dates back to the late Bronze Age.

The Stonehenge of Wales is one of the grandest neolithic dolmens still in existence.

A memorial to a dog that inspired rioting in the streets of London.

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

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