This irregularly shaped sea fortress has defended not one but three different sovereign states.

Follow the original medieval paths that wind through this intriguing section of the city.

The near loss of the stately fireplaces at this medieval castle spawned some of Britain's most crucial historic preservation laws.

The ruins of an 11th-century Norman castle with a rare, perfectly circular shape.

A lone pole once used to display a man's corpse now stands empty, but the memory remains.

Though much of the castle was robbed of its stones, the underlying earthworks are among the best-preserved in England.

This picturesque horseshoe weir was first built in the 1600s to prevent flooding in the town of Bath.

Don't be fooled by this fake medieval facade even if it is almost 300 years old.

Eighteenth-century home, where Herschel discovered the planet Uranus.

Created by one of England's most prolific labyrinth designers, inspired by Bath city history.

With lush plants and flowers, huge trees, ponds, and hidden monuments, this place feels a bit like discovering Narnia.

A copy of the brutal decapitation device that predated the French Guillotine by about 200 years.

This Georgian architectural masterpiece is the only cloth hall left in Britain.

This former abandoned hospital, a complex of stunning 19th century buildings, once housed 2,000 psychiatric patients.

A perfectly preserved hill village where the buildings are painted like white lace.

The ruins of a 13th-century monastery that long served as a place of refuge from wars and raids.

A tall smoke stack and boarded-up buildings are all that's left of the pioneering plant.

Along the Palisades skyline are the ruins of a large mansion built in 1911 and demolished in the 1930s.

Hidden in the hills is a mysterious stone structure, known only to a few.

This architectural stunner is one of the few surviving Egyptian Revival theaters in the U.S.

A sturdy relic of Britain's once crucial gunpowder industry is now a haunting Cornish ruin.

These Roman ruins in England’s Lake District are 2,000 years old, but look pretty good for their age.

Centuries of human activity have forged an eerie landscape of ruins and craters on an exposed and windswept hilltop.

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