Au Sable Lighthouse
The Au Sable Point Lighthouse was built in 1874. An eighty-seven-foot brick tower was built on a rise, placing the light about 150 feet above Lake Superior's surface. The Third-Order Fresnel Lens displayed a fixed white light. The attached, two-story brick keeper's dwelling was large, but those who lived in it knew theirs was one of the most remote mainland light stations in America. The nearest town, Grand Marais, was more than 12 miles away, and there was no road. Keepers either hiked in or came by boat.
From Lake Superior Lighhtouses