A former millstone quarry in the Italian Alps is strewn with rocks bearing distinct round shapes.

Considered an enigma by folklorists, an object of primitive animistic worship lives on in Yamanashi.

An ancient stone structure that, according to legend, was built by witches.

Once an integral part of Native American life, very few of these communal New England stones have survived to the present day.

A beautifully-carved Pictish stone encased in a protective glass structure.

Remnants from a time before electricity.

A pair of stone circles positioned on the bank of the River Esk.

The walls of the statehouse tell the story of Ohio’s prehistoric past.

One dedicated priest constructed this beautiful stone grotto by hand from 1926-1933.

This ordinary-looking rock may have played an important role in a 16th-century Scottish battle.

These turtle-shaped concrete stepping stones provide a unique river crossing in central Kyoto.

Legend has it that this stone moves down to the river sometimes to have a drink.

This park boasts a unusual collection of curious monuments from around the world, from Micronesia to Antarctica.

An old quarry transformed into a recreational and cultural space.

According to legend, this structure was inspired by the Tower of Babel and built in a 19th-century industrialist's yard so he could walk his dogs without leaving home.

The last refinements in the North Carolina-South Carolina boundary were marked with this stone.

This house covered in small stones was the work of one man over the course of nearly 30 years.