A 12th-century church that houses a dark creature.

A fantastic example of Victorian railway engineering with two unusual decorative features.

The photographs of "fairies" that fooled much of the world (including the creator of Sherlock Homes) were taken at this English stream.

This round structure dotted with portals is one of several pieces scattered throughout Lancashire.

The pyramid-shaped grave of one of the first mountain astronomers and a pyramid theorist.

The only surviving leech house in the United Kingdom was a home for bloodsucking worms until the 1900s.

This collection of ancient structures makes up part of the largest group of prehistoric earthworks in Britain.

The remains of a remote village that once housed over 1,200 dam workers and their families.

Although it appears ancient and mysterious, the quirky folly was actually built 200 years ago by an eccentric estate owner.

Though this large circular site is now named for the legendary king, its history dates back to the Neolithic era.

An impressive Neolithic henge with banks nearly 10 feet high.

One man and his dog, immortalized in a giant statue.

This unique style of bridge is the last of its kind and runs over the straightest canal in Britain.

The sculptural remains of the last home of a legendary Dada artist.

This beautifully situated lakeside Roman settlement was likely built during the reign of the Emperor Hadrian.

A 2,000-ton rock resting in a state of a delicate balance.

This charming English house was once the home of England's most famous poet.

Decaying 18th-century church converted to a single-family home.

A rocky outcrop where monks hid their most holy relic while escaping Danish invaders.

This 13th century castle is chock full of ghosts and impossibly rare cows.

The medieval-looking hammer beam teak roof may be a Victorian vanity, but it's still absolutely magnificent.

This museum honors the young maritime hero who became an unexpected Victorian-era celebrity.

This giant wooden treehouse within a sprawling garden has its own eatery.

A lone pole once used to display a man's corpse now stands empty, but the memory remains.