Three Sisters Lighthouses - Eastham, Massachusetts - Cape Cod - Video by: Mark TR Filteau. Cape Cod, Massachusetts An 1836 petition by Eastham residents concerned about loved ones at sea caused the Boston Marine Society to recommend to the United States Congress the construction of the Nauset Lights. Congress granted $10,000, and the contract was awarded to Winslow Lewis, the lowest bidder at $6549.Three 15-foot high masonry towers were built. The lights soon gained the nickname “The Three Siste