• The Sanibel Island Light or Point Ybel Light is the first lighthouse on Florida’s Gulf coast north of Key West and the Dry Tortugas. It is located on the eastern tip of Sanibel Island, and was built to mark the entrance to San Carlos Bay for ships calling at the port of Punta Rassa, across San Carlos Bay from Sanibel Island. The grounds are open to the public, but the lighthouse itself is not.