Beavertail Lighthouse, built in 1749, was and still is the premier lighthouse in Rhode Island, USA, especially for entrance into Narragansett Bay. The 45-foot (14 m) lighthouse lies on the southernmost point of Conanicut Island in the town of Jamestown, Rhode Island in Beavertail State Park. The light has been reconstructed multiple times since its erection, most recently after the Hurricane of 1938. The light provides navigation for boats and ships entering Narragansett Bay in the East Passage between Conanicut Island and Newport, Rhode Island on Aquidneck Island. Other lighthouses, such as Castle Hill Lighthouse, Point Judith Light, and Rose Island Light are visible from Beavertail Lighthouse.
Its white light rotates counterclockwise and makes a full rotation in about six or seven seconds. The light is on 24 hours per day, unlike many lighthouses that are near it. It has a loud foghorn that blasts about every 30 seconds during the fog.