You'll likely recognize the red-brick lighthouse called Southeast Light from postcards of the island. Set dramatically atop 200ft red-clay cliffs called Mohegan Bluffs south of Old Harbor, the lighthouse had to be moved back from the eroding cliff edge in 1993. With waves crashing below and sails moving across the Atlantic offshore, it's probably the best place on the island to watch the sunset. Just south of it a steep stairway descends to a narrow beach backed by the bluffs.
