This section of the Kennet and Avon Canal has been designated the same level of heritage protection as Stonehenge.

This 20-foot mountain is made up of some 15,000 mannequins—if you visit, you can even take a piece home with you.

In a sleepy village in Oxfordshire, the visionary English writer's gravesite attracts a yearly pilgrimage.

The grand complex of buildings that comprise Liverpool's Exchange Flags includes a vast World War II bunker that has been frozen in time.

The sanctuary seems to either float atop the water or sink into the dirt, depending on the water level.

This home of a taxidermy hoarder is among the grandest and most singular of historic English estates.

The wreck of a B-29 Superfortress now stands as a memorial left in the moors.

This Roman quarry once held secret masses and smuggler's contraband and is now home to rare species of bats.

This abandoned gun tower was built to defend the River Thames from a French naval attack.

An open air haven for tropical monkeys in the damp moors of the English country.

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

A open air theatre built on a cliff by an eccentric British woman.

This haunting stone chasm is a hotbed of mossy rock and English legend.

A metal tree emits eerie, melodic notes on top of Lancashire's Crown Point.

The largest cave chamber in Britain—big enough to fit a whole cathedral inside.

Giant, friendly pelicans in Central London, the most unlikely of places.

This shop and gallery is a modern-day cabinet of curiosities, unassumingly positioned along an urban thoroughfare.

Gladiators once walked this ancient, subterranean passage.

A sharp sculpture made of thousands of pieces of jagged glass.

The Cycladic architecture makes this Athens neighborhood feel like an island paradise hidden in the shadow of the Acropolis.

This ancient theater was once the home of fierce gladiatorial battles.

Ivy-covered Medieval tunnels cut through this charming town in France's Loire Valley.

A Gothic cathedral created from volcanic rocks.

Lyon, France is home to two remarkably preserved Roman theaters, one dating back to 15 BCE.