The Beavertail Lighthouse is easy to get to from land, but a view from water is really great. You can see all the rocks the lighthouse is protecting boats from hitting, and all the people visiting the lighthouse.
This barrier is in Quonsett Point, near the air field and where the Lighthouse Cruises leave. You can see in the far distance people fishing. Some day I'll go back with a wide angle lense and try to capture the entire view.