I live across Ipswich bay from the small fishing village of Lanesville MA. Lanesville is on Cape Anne and is literally surrounded by several old and defunct Rockport granite quarries. These quarries were developed near the water so they could transport the quarries blocks to market via boat. While that industry is no longer alive, its handiwork is still very apparent.
A granite block wall and "Jetty" literally walls off the harbor from the sea. I love the rugged beauty of these stacked blocks. We took my friends boat for a picnic and some seawall jumping. A great use of old granite blocks on a beautiful summer day!