The 2,000-year-old pieces of metal are an ancient soldier's military discharge papers.

This library dates back to the late 17th century and was one of the first public lending libraries in England.

An unusual stone chair can be found on the banks of the River Wear, not far from Durham Cathedral.

A rather grand, but tiny, folly on the banks of the River Wear associated with a Polish count.

Though this bridge was originally built in the 12th century, only one of its 10 arches dates back that far.

An abandoned tower once used to study the cosmos hides within a thicket of greenery.

The former "holiday home" for monks at the Durham Cathedral.

The world’s oldest surviving single-arch railway bridge.

The northernmost point in Denmark is a turbulent sandbar created by two clashing seas.

Tiring of digging out the door to this church for every service, it was eventually abandoned to the sands.

An abandoned lighthouse awaits its destiny: being buried under shifting sand.

This Danish rock field is actually a sprawling ancient cemetery holding the bodies of 700 Vikings.

This colorful artistic feature atop a Danish art gallery allows visitors to stroll through a rainbow.

This inverted metropolis model is the artist's "revenge" for not being allowed to have a doll house as a kid.

Denmark’s never-ending bridge.

For decades, a bottle factory dumped their waste into these waters—now it's considered the best sea glass beach in England.

There were once more than five stones in this ancient monument.

Twice a day this ancient path disappears with the tides, leaving the Holy Island of Lindisfarne out to sea.

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

A beautiful Greco-Roman structure houses a well once believed to have healing powers.

Sprawled across the Great Hall ceiling are various constellations and images relating to the zodiac.

Remnants of the 16th-century defensive wall still stand unassumingly within Edinburgh.

Tiny effigies of the victims of Edinburgh's famous Anatomy Murders.

These wooden pipes were crucial to providing water to Medieval Edinburgh.