"The Donut" was built as part of an expensive, ill-fated engineering endeavor.

This captivating Bronze Age timber circle spent centuries concealed by the tides.

This little-known hero has been protecting "The Fens" for close to 400 years, and now from its most powerful challenger yet: climate change.

Fascinating town where normal life interfaces with the occult.

An ancient well nestled at the foot of Glastonbury Tor, shrouded in Arthurian legend and revered for its purported healing waters.

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

Two gilded cherubs perched on a church bell tower have been reminding visitors of the finitude of life since 1760.

This centuries-old hotel hides a network of secret cellars and passages once used by smugglers.

Also known as Rye Castle, this 13th-century fortification later became a prison and held one of Rye's most famous criminals.

This remarkably intact, 260-year-old cargo ship is only visible at the lowest of spring tides.

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

During the heyday of fishing in Hastings, there were more than 100 of these storage facilities.

A winding cave grotto walkway built to provide employment for veterans after World War I.

A granite plane marks the site where a French aviator completed the first airplane flight across the English channel.

One of the oldest seagoing boats in the world can be found at the Dover Museum.

An avant-garde artist is survived by his seaside garden.

This astronomical clock is the second oldest in England.

The first archaeological site discovered by aerial photography.

Ancient human remains unearthed around the iconic monument.

Fantastically decorated underground chambers built in the 1760s.

This reconstructed Norman castle is the world's most accurate, from location to livestock.

These engineering masterpieces are a dominant feature of the Belfast skyline.

This giant sculpture is both loved and disliked by the local community.

A medieval abbey featured on 'Game of Thrones' that dates back to the 12th century.