A beautiful ruin of a 14th-century Plantagenet castle built by a medieval mercenary.

This giant wooden treehouse within a sprawling garden has its own eatery.

The largest oak in England is said to have been the hideout of Robin Hood and his Merry Men.

Although it appears ancient and mysterious, the quirky folly was actually built 200 years ago by an eccentric estate owner.

A meandering boardwalk across the bogland leads to a "stairway to heaven" with sublime views.

On this wooded path, a stained-glass window creates a spellbinding forest cathedral.

This single-track road rewards brave drivers with stunning Scottish scenery.

Stonehenge has nothing on Castlerigg’s views.

No one knows who created the statues or if they are arranged properly—let alone the artwork's real name.

A 200-year-old prison that now houses a peculiar crime museum.

This enchanting hill is home to fairy lore and a sinister local mystery.

A 4,500-year-old forest is slowly being revealed from beneath the sands of a Welsh beach.

More stones than Stonehenge, all scattered within a windswept landscape sure to enchant 'Outlander' fans.

The forest that inspired Winnie-the-Pooh's Hundred Acre Wood can be found outside London.

This lovely little burbling creek is actually a deadly waterway that has dragged down everyone who ever set foot in it.

The mystery of this small, brick pond eluded its possibly only investigator until his death.

Possibly the oldest of Britain's ancient henges is also one of its most stark.

Legend says a witch conjured the world's third largest whirlpool to protect Scotland from a nasty pirate.

Britain's only herd of free-ranging reindeer.

A beautiful Greco-Roman structure houses a well once believed to have healing powers.

This obscure walkway links Edinburgh’s Old Town with one of the city's prime vantage points.

This modern labyrinth lies in the shadow of a ruined medieval castle.

This ethereal, rainforest-like gorge is home to waterfalls, quaint bridges, and fairy folk.

A 6th-century stone lies at the site of the mythical battle waged between King Arthur and his nemesis Mordred.