St Joseph Pier Lighthouse in Michigan
See that long catwalk? It allows (brave!) St. Joseph Lighthouse keepers to reach their destination on this nearly thousand-foot pier during howling winter storms. The lanky, skeletal structure also encourages spectacular drapes of ice to form and hang from the span when the wind-whipped waters of Lake Michigan meet sub-zero temps. Think seacoast when you think lighthouse? These brawny beacons are just as essential on the shores of the Great Lakes; in fact, Michigan can claim more lighthouses than any other state in the US.