One of the U.K's earliest public water supplies is within the "plague village."

The solitary cairn marks a mysterious death that's still controversial more than two decades later.

Scotland's first Masonic lodge may also be the oldest in the world.

One of several Lilliputian portals that are ready to transport passengers to other dimensions, if they can find them.

This unusual 7th-century Frankish seal offers more questions than answers about its past.

The church is gone, but the graves and legends remain.

A historic Georgian building and warm springs.

A small waterfall tucked away in the forest of Harmby Gill.

Home to the ancient Roman temple of a lesser-known Celtic god that inspired J. R. R. Tolkien and H. P. Lovecraft.

These "bridges" help confused bats cross the road.

This forgotten chalk mine was reopened thanks to a massive effort from the local community.

One of England's oldest stone churches and the birthplace of the "father of English history."

Britain's answer to the NSA is based out of this deliciously-named circular headquarters.

In pastoral England, a plaque marks where an imaginary community addressed the problem of combat mortality.

Unusually, this ancient Iron Age broch has never been excavated.

The world’s first dedicated cloud observation platform.

A plaque installed underwater marks the fall of a royal family from an imagined parallel universe—part of a globe-spanning art project.

The world's first successful water-powered cotton mill paved the way for the factories of the British Industrial Revolution.

Its impressive still-working beam engine is a thing of beauty for engineering history fans.

Following years of secrecy, the hidden history of a World War II site is being brought to light.

This two-towered gateway is all that remains of the unluckiest pier in the world.

This delightful hidden farm is home to Victorian ruins and a wonderful menagerie of animals.

This medieval manor house was hastily fortified when it found itself in the middle of the Scottish fight for independence.

The final resting place of one of the most influential modern occultists.