Harbor Square is a retail and office building, located on the harbor in the picturesque Village of Northport. Harbor Square offers unique waterfront retail opportunities, along with waterview professional offices upstairs. The Harbor Square building was part of the LILCO power plant on Woodbine Avenue. It was the original LILCO headquarters. LILCO was formed from the original Northport Electric Light Company, which was formed by members of the Edward Thompson Publishing Company. The power plant was taken down in the 1960's and made into today's beautiful park along Northport's waterfront. Harbor Square is all that remains of the LILCO power plant.