- These data show the location of all extant lighthouses and lights on the coastline of Massachusetts. While many of the lighthouses represented are active aids to navigation maintained by the United States Coast Guard, others are not and are maintained privately. All lighthouses are shown in their current positions and may have been moved from their original location. These data were updated on November 10, 2009 to include lights indentified by the Geographic Names Information System (GNIS).
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