Although most are probably not familiar with this lighthouse located in Bay City, MI, I feel it would be a good choice for Harbour Lights. It served as a U.S. Coast Guard station until the 80's, when it was abandoned in favor of a new, modern station directly across the river. It is also landlocked by Dow Chemical, with no access to the public, other than by boat. With years of neglect, it is starting to fall into disrepair.