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

19th century tunnels burrowed under Liverpool.

Contrary to its heavenly name, this tranquil oasis has a dark and tragic history buried with it (quite literally).

Scars from the English Civil War mar this medieval sanctuary.

Where an 11th-century flying monk crash landed after attempting to take to the skies.

World War II-era bunkers are hidden under the beaches of this picturesque park, which is still scattered with wartime watchtowers.

There are hundreds of secret WWII bases hidden in British forests. Built to fight a Nazi invasion, they remained unknown for decades.

Fascinating town where normal life interfaces with the occult.

In the ruins of Glastonbury Abbey lies the alleged resting place of the legendary king.

This hill and tower are steeped in legend, from King Arthur to the Holy Grail.

Home to the most complete dodo remains known - one head, and one foot.

Ancient Egyptian wigs, South American feather headdresses, a bounty of anthropological artifacts in Oxford.

J.R.R Tolkien, C.S. Lewis, and other "Inklings" met at the Oxford pub to discuss the now legendary fantasy stories they were writing.

Used as an example in one of the first dictionary entries for "museum" in 1706.

One of Oxford's greatest treasures likely belonged to England's legendary King Alfred the Great.

This astronomical clock is the second oldest in England.

The mysterious, fantastical woodland inspiration for "The Lord of the Rings."

Famously misunderstood wonder of the ancient world

A plaque claims this artwork outside a children's hospital was used in the 1998 Quidditch World Cup.

17th-century merchants in Bristol nailed their deals by placing money on these pedestals.

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

A miniature village mimics the surrounding buildings so well it includes itself.

Asthmatic Charles Hyett's son built a fantastical garden for his father to convalesce in, alas it was too late.

A giant white horse drawn on an English hillside may not have been intended to be a horse at all.