The mile-long granite breakwater extending into Penobscot Bay is one of the finest free attractions on the Maine coast. The walk takes about 20 minutes each way on large, uneven granite blocks — wear shoes with grip — and the views improve with every step: the harbor on one side, the open bay and distant Camden Hills on the other.
At the end stands the Rockland Breakwater Lighthouse, a small white structure with a red roof that has been guiding vessels into the harbor since 1902. The lighthouse is open to visitors on summer weekends when volunteer keepers are present. Even without going inside, the walk to the end and back is one of the most rewarding hours you can spend in Rockland.