Portland Head Light, located on Cape Elizabeth in Maine, was first lit on January 10, 1791, and decommissioned and automated on August 7, 1989. As such, it is one of the state’s oldest lighthouses. The former keepers’ quarters, built in 1891, have been converted into a museum containing lighthouse lenses and interpretative displays. The tower is only open in September on Open Lighthouse Day when access is very limited, but if you make it to the top, you’re sure to have a stunning view of Maine’s rocky coastline and the Atlantic Ocean.