This trio of neolithic stone monuments are fabled to be a king and his knights that were petrified by a witch.

One of the tallest maypoles remaining in England in one of its smaller villages.

Near Birmingham, England three and a half miles of top-secret tunnels housed a World War II “shadow factory” and a Cold War nuclear bunker.

Built by the patron saint of illusionists this Elizabethan manor house is riddled with secret cubbies for hiding priests.

A hidden tunnel leads to an abandoned slate quarry that's now a secret swimming spot guarded by cliffs.

A petite castle folly in the English countryside.

There are hundreds of secret WWII bases hidden in British forests. Built to fight a Nazi invasion, they remained unknown for decades.

A modest stone circle in North Wales.

Deep in the countryside lie the remains of one of the grandest Roman dwellings in Britain.

The oldest working mechanical clock in the world.

This strategically placed hill fort has served defensive forces from the Iron Age up until the 20th century.

The largest stone circle in the world has ended up bringing up more questions than it has answered.

It's possible to walk inside one of the largest Neolithic tombs in Britain.

Europe's largest prehistoric mound – burial site of a legendary king?

Britain’s longest ancient monument, this great 8th century earthwork was built to mark the boundary between what would become England and Wales.

Every year locals tumble 650 feet down to the bottom of the hill chasing a Double Gloucester cheese.

Colin Stokes "got a bit carried away" and built a castle that looks like something out of Tolkien.

Three bridges straddle a stream, one stacked upon the other.

Scars from the English Civil War mar this medieval sanctuary.

Local lore says passing infants through its holes could magically cure them of measles and rickets.

The largest known medieval map of the world.

In 1943 the British military took control of this village, telling residents they had to leave temporarily. The villagers were never allowed to return.

Besieged by war, this castle ruin has crumbled into a peaceful picnic spot.

You can crawl inside this atmospheric 5,000-year-old tomb.