Rare collection of medieval books under lock and key.

The largest known medieval map of the world.

The only medieval bridge in Britain with its defensive tower still in tact.

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

This well-preserved Cistercian Abbey in a romantic pastoral setting has inspired artists like the poet Wordsworth.

Besieged by war, this castle ruin has crumbled into a peaceful picnic spot.

The first archaeological site discovered by aerial photography.

This neolithic stone was once used for ceremonial practices similar to its neighbor Stonehenge.

Overlooking the spot where the Pilgrims boarded the Mayflower stands Devon's answer to the Colossus of Rhodes.

This five-story sentinel is the sole surviving semaphore tower in Britain.

A 142-foot-tall Q-tip on Bristol's skyline.

One could not be blamed for literally walking all over this supposed landmark.

Sometimes an island, sometimes a rocky outcropping connected to the world by a tiny suspension bridge.

A remarkably well-preserved one room schoolhouse that dates back to 1876.

This miraculous well is said to heal the sick, grant wishes, and tell the future.

Inside this magnificent 12th-century church is one of the finest carved wagon-roofs in all of England.

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

This ancient fort overlooks the site of a disastrous retreat from the English Civil War.

Legend says the people of Wiltshire got their "Moonraker" nickname from this small pond.

The geoglyph once sported a glass bottle eye.

In 1999, a new equine figure was cut into this English hillside near the site where an older white horse had previously appeared.

Europe's largest prehistoric mound – burial site of a legendary king?

It's possible to walk inside one of the largest Neolithic tombs in Britain.

This church is considered the largest and most complete Saxon church in England.