This local landmark and historical feat of civil engineering, finished in 1928 and linking Orr's Island and Bailey Island in Harpswell, is properly known as the Cribstone Bridge. Its design and 1,150-foot span allows tides to flow unimpeded through the granite slab cribworks. It's reputedly the only bridge of its kind in the world. There's very limited parking off ME 24 at its northern end. The setting is quintessential coastal Maine. The best times to visit it are early or late in the day. Low tides reveal vestigial beaches with vantage points to either side of the bridge. The drive south to the bridge is pleasant and scenic.