Northeastern United States contains an extraordinary range of historic structures built from glacial and quarried stone. These structures include stone walls, foundations, wells, culverts, stone arch bridges, buildings, and milestones to name a few. Many of these stone structures have survived as renovated old buildings, historic preservation sites, or abandoned farm foundations in the woods. Maybe you live on one of these old places, or have seen stone walls while hiking or hunting. Many of these stone structures are easily identified while others may prove a bit more puzzling. This webpage is designed as a field guide to identifying and learning more about these old stone structures.