This abandoned Slovenian military barracks has become a punky-political art squat.

Martin Bricelj Baraga's monolithic sculpture measures the blueness of the sky, and changes color to match it.

A whimsical bridge adorned with decorative dragons.

Krakow's own version of the Hollywood Walk of Fame.

Remnants from a time before electricity.

A statue commemorating a Polish dog who took his role as man's best friend very seriously.

St. Mary's features one of the most spectacularly decorated cathedral interiors in all of Europe.

This mundane post marks the old location of the city's main postal hub.

These rusting, skeletal structures are monolithic monuments to Glasgow's industrial past

This abandoned hospital village was once viewed as an innovative way to deal with mental illness.

This former football stadium seems almost abandoned but is still in use by the next generation of Scottish sports stars.

The sign marks one of the endpoints to mainland Britain's longest overland travel route.

This lovely Scottish nature walk leads to the source of a local legend.

Another entry into the world of Edinburgh's pop-up artworks.

These ruins of a medieval church are full of architectural mysteries.

This was once a hall in which a 16th-century royal banquet was hosted by King James VI of Scotland.

This charming old building's loose connection with the Scottish Reformer is what saved it from demolition after it split apart.

A leafy, peaceful oasis nestled in the heart of Glasgow's busy south side.

A pair of stones embedded in an Edinburgh street memorialize one of the city's last public hangings.

This 16th-century close preserves an unusual piece of Edinburgh's transportation history.

This volcanic plug boasts the longest recorded history of any Scottish stronghold.

This Birnam-based garden honors the legacy of 19th-century children’s book author Beatrix Potter.

The U.K.'s first underground railway line is now a lively thoroughfare for runners and cyclists.

A sea cave with a waterfall and Viking past