One of Maine's oldest lighthouses, it was listed on the National Register of Historic Places as Saddleback Ledge Light Station on March 14, 1988.

[1] Saddleback Ledge is a rocky outcrop located roughly midway between Isle au Haut and Vinalhaven Island on the east side of Penobscot Bay.

The light station consists of a single structure, a conical tower 36 feet (11 m) in height, built out of cut granite and topped by a ten-sided lantern house surrounded by an iron deck and railing.

The interior of the tower has space for the keeper's quarters and supply storage, and has narrow vertical windows on its east and west faces.

[5] The light station was authorized in 1839, and the tower was built that year to a design by Alexander Parris.