Mysteriously stacked storefront paths give this medieval British town an iconic style like none other.

One of the largest mechanical models of the solar system in the world.

This logic-defying 16th-century Tudor manor still stands to the delight and astonishment of onlookers.

On a site with a long military history, a 1980s shelter.

Britain’s longest ancient monument, this great 8th century earthwork was built to mark the boundary between what would become England and Wales.

Near Birmingham, England three and a half miles of top-secret tunnels housed a World War II “shadow factory” and a Cold War nuclear bunker.

The largest known medieval map of the world.

Abandoned boats decaying in the largest ship graveyard in mainland Britain.

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

This former Welsh metal factory is now a lovely abandoned relic but was once one of the industry's world leaders.

Go deep down into the earth to experience the world of Welsh coal miners.

A harem-inspired Moorish fantasy design in a Victorian-era Welsh castle.

Stroll through Welsh history in a village of reconstructed structures.

High Victorian fantasy created a fairytale castle out of a ruined fortress in Wales.

This former military airfield's claim to fame came from a lucky accident during the Second World War.

A hermit's tiny cell built into the cliffside that saved him in South Pembrokeshire.

The sanctuary seems to either float atop the water or sink into the dirt, depending on the water level.

An abandoned 18th century manse looks like something out of an Indiana Jones movie.

A medieval relic whose great hall once hosted Mayflower pilgrims, one of Henry VIII’s ill-fated wives, and plenty of royal intrigue.

Despite its ornamental looks, this towering Tuscan-inspired anomaly was a masterpiece in hydraulic engineering.

The adorable animals return to this nature reserve every fall to give birth to their pups.

The near loss of the stately fireplaces at this medieval castle spawned some of Britain's most crucial historic preservation laws.

The control tower at the historic weapons range is now available as a highly unusual vacation rental.

In the U.K., a historic workhouse shines a light on the early, harsh treatment of the poor.