These ruins of a Gothic church hold the tomb of Princess Margaret, Lady of Galloway

This decaying, grandiose tweed mill once housed the Norwegian Army in exile.

The oldest working camera obscura in the world sits on the top floor of an old windmill tower.

An Anglo-Saxon cross inscribed with possibly the oldest written work of English literature.

Mineral well linked to the final days of a beloved Scottish poet.

Also known as “Robin Hood’s tree,” it became a famed location along Hadrian's Wall before it was cut down.

The Devil’s Porridge tells the story of HM Factory Gretna and the munitions girls who mixed deadly chemicals.

A 16th-century fortress that was a Nazi-era prison and execution site, now a silent memorial.

Cages that once displayed the bodies of executed leaders hang from a German church tower.

A six-story, asymmetrical tower filled to the brim with scientific experiments.

The architect of this fanciful complex called it an "oasis for humanity and nature in a sea of rational houses."

At nearly four meters tall, this giant potato looms over a small Polish town.

One of the world's largest amber altarpieces is housed within this reconstructed medieval church.

Modern art commemorates one of the first military actions of World War II.

This antique thermometer honors the creator of the first universal temperature scale.

A huge wooden clock that is so beautiful its creator was forcibly blinded.

During the renovation of this bas-relief, the constructors added one unusual element.

These rare statues are one of the few remaining material witnesses to Old Prussian culture.

A small granite monument marks where the borders of three countries meet.

Open-air museum with a large collection of Soviet-era statues.

An old hill fort covered in over 100,000 crosses is a symbol of Lithuanian nationalism and beliefs.

A stone marker and sculpture in the city of Riga stake a claim for the very first community Christmas tree.

A black cat protests the City Guild in Riga's Old Town.

This celebration of Latvia’s freedom and independence avoided demolition over half a century of Soviet occupation.