Stone

A physical reminder of Earth's ancient past, this rock results from the photosynthetic processes of some of the oldest forms of life.

This stone windmill marks an old, mysterious homestead in what is now central Austin.

These unique stepping stones hug a river's edge to take hikers on a journey through a limestone gorge.

It was an experiment to prove that glacial boulders and rocks can be used in constructions and dwelling.

This commemorative stone was erected near the first Scout campsite.

An 11th-century runestone decorates the halls of Terminal 2 of this Scandinavian travel hub.

This stone amphitheater was once part of Nazi Germany's plan to promote propaganda.

This stone incorrectly marks the 35th parallel, causing some territorial kerfuffles.

Located in the mountains of Nicaragua, one man has spent most of life beautifying a massive cliff by hand.

Every September, international competitors flock to the flooded quarries of a tiny Scottish island.

These ruins are all that remain of what a Spanish barrack that likely housed a quarry overseer, masons, and stone cutters involved in the construction of the Castillo de San Marco.

The largest hewn stone in history.

The remains of a 12th-century chapter house in Golden Gate Park.