A remarkable medieval structure born from a 14th-century disaster.

A mysterious crater-like pond has a spooky tendency to empty and fill with complete disregard to rainfall patterns.

A strange and ancient landscape hides the dark, cavernous remains of a 5,000-year-old flint mine.

This 15th-century fortification was built to defend bunnies.

The view from this giant Stone Age toad is unexpectedly beautiful.

Legend says these rocks used to be hunting dogs, a story that may have inspired Sherlock Holmes' most famous case.

These haunting ruins belong to an ancient village that once had one hell of a view.

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

The nearly 200-year-old folly has a secret spiral staircase hidden in one of its pillars.

Giant naked man on a hillside.

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

One of England's most famous churches hides a pair of little known architectural treasures.

A million and a half tons of earth were used to create one of the world's largest land sculptures.

A mysterious bridge over a sunken Roman road.

The "Bridge Over the Atlantic" lets you cross the waterway in mere seconds.

Numberless clock creates a meal of time for the dreaded, insectile Chronophage.

A verdant 17th-century-style garden hidden along Edinburgh’s Royal Mile.

A circle stone within a stone circle.

A magnificent winding road through a steep valley, with deep natural caverns at the bottom

These morbid carvings remind churchgoers of the inevitability of death.

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

Early Medieval stones sit on display at the beautiful Govan Old Church in Glasgow.

A magnificent, iconic stone tower in the Scottish Highlands.

Built to hold the worst of the worst of the Nazi war prisoners.