One of two Irish-style round towers in Scotland, this structure has mysterious origins.

A Bulgarian monument to Russia's role in World War II is constantly being painted in pop culture protest.

A flamboyant five-story building in Bulgaria resembles a crawling snail.

A striking symbol of the Bulgarian capital.

A collection of art from Bulgaria's time as a communist state.

"Unity, Creativity, Beauty."

"Holy Wisdom" overlooks the city that became its namesake.

This unusual rock looks like a giant, otherworldly mushroom sprouting atop a cave.

An architectural marvel that spans the Arda River, and has stories of a haunted past.

One family's environment-friendly hobbit-house in Wales.

A peace symbol in Northern Ireland is among the world's largest hedge mazes.

The taxidermy remains of the most popular pony in children's literature.

Lone survivor from Custer's Last Stand forever preserved.

The enormous earthwork sculpture honors the ponies that lived and worked in the old colliery.

A unique tribute to the millions of animals who served and died for the British military.

Every hour on the hour a naked heroine and her leering foil appear from this giant cuckoo clock.

These giant metal horses graze on a hilltop near the Montana highway.

Da Vinci's equestrian statue, 500 years in the making.

The land is home to swimming ponies and a legendary 18th-century treasure.

Old and brave breed of warhorses known for their elegant, curved ears.

The grassy landscape is home to the world's last truly wild horses.

An enigmatic natural rock formation with a manmade passage cut through the center.

Left by the Devil, an ancient quarry or just plain old erosion, this enigmatic rock pillar rises 28 feet from the hillside.

A hundred copies of Antony Gormley's naked body stare out across the water.