The Stonington Harbor Light is a historic nineteenth century lighthouse located on the east side of Stonington Harbor in Stonington, Connecticut. A light housed in a small granite lighthouse known by this name was originally built by the federal government in 1824, and was located on Windmill Point in the harbor. Erosion led to the lighthouse being torn down and relocated to its current site in 1840. A second stone building was constructed and the 35 feet (11 m) tower was attached to the structure.
In the 1880s, the Stonington Breakwater Light was constructed farther out in the harbor, and the Stonington Harbor Light was decommissioned in 1889.
The site is now the home of the Stonington Historical Society, which uses the building as The Old Lighthouse Museum. Holdings in the museum document the area's long and distinguished cultural and nautical history, and exhibits include a sixth-order Fresnel lens.(Wikipedia)