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

A village on the east coast of England that has almost completely eroded into the North Sea.

Large-scale contemporary artworks tower over fields and lurk in forests around a Jacobean manor house.

The oldest continual pilgrimage site in Britain was supposedly created by a gruesome beheading.

It is said the legendary wizard once lived in this sea cave beneath Tintagel Castle.

A giant pineapple, a symbol of hospitality, and an amazing vacation rental option.

This hospital once pioneered the use of electroencephalograms, but fell into maltreatment, abuse, and eventual abandonment.

A red sandstone freestanding monolith rises out of the sea in northern Scotland.

St. Mary's Asylum was isolated and abandoned before being converted into a Bed and Breakfast.

A breathtaking flower tunnel bursts with beautiful golden blossoms.

Fantastically decorated underground chambers built in the 1760s.

One of Scotland's most important modern structures, it just made the '100 Most Endangered Sites' list.

The stately remains of Llywelyn the Great's mighty fortress.

A pub that is literally in the middle of nowhere, but continues to do business.

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

A network of concealed passageways lies within a busy London Underground station.

One of the largest sculpture collections in the U.K. features history's greats, from Bob Dylan to Galileo, in bronze.

Dating back almost 400 years, the oldest public collection library in the United Kingdom was once the study hall of Karl Marx.

Pop culture has helped to keep this iconic British building from being destroyed.

This crumbling folly looks like an enchanted left over from Middle Earth.

A hermit's tiny cell built into the cliffside that saved him in South Pembrokeshire.

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

A mysterious pair of mice eating a piece of cheese is London's smallest public sculpture.

The oldest inn in England served brew to the crusaders.