It's a mystery how these curious columns wound up in an Edinburgh suburb.

The abandoned buildings of a hospital that saw most of its activity during the World Wars.

This former school is now abandoned and a canvas for graffiti artists.

The ruins of a 15th-century church once home to priests who prayed for a single family's salvation.

This tiny island is home to the world's largest colony of Northern gannets.

An amazing model of a whale's jaw bone pays homage to the region's seafaring traditions.

The ruins of the second of three churches dedicated to the saint in a touristic Scottish town.

The one-time stronghold of the noble Douglas family, now home to ghost sightings and nesting birds.

At high tide this strange footbridge appears to have no purpose whatsoever.

Ruined castle with subterranean vaulted Goblin Ha' or "Goblin Hall."

The ruins of a 15th-century castle that has seen its fair share of bitter feuds.

This 13th century castle is chock full of ghosts and impossibly rare cows.

This iconic 1,000-year-old medieval castle is a favorite of the film industry, most notably as the location for Hogwarts in Harry Potter.

This giant wooden treehouse within a sprawling garden has its own eatery.

This restaurant was removed from the famed sister ship of the Titanic and placed within a hotel.

This enormous secondhand bookstore inside a Victorian train station sparked the "Keep Calm and Carry On" craze.

The sign at the garden gate reads: "These Plants Can Kill."

This enchanting Victorian estate was home to the world's first hydroelectric power generator.

St. Mary's Asylum was isolated and abandoned before being converted into a Bed and Breakfast.

A million and a half tons of earth were used to create one of the world's largest land sculptures.

This gorgeous space is England's largest independent library outside of London.

A vortex fountain that seems to rise out of the ground.

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

Derelict chemical plant on the North Sea is a beautiful industrial ruin.