Whitefish Point Light

The Whitefish Point Light, a lighthouse in the Upper Peninsula of Michigan, is the oldest operating light on Lake Superior. It is arguably the most important light on Lake Superior. All vessels entering and leaving Lake Superior must pass the light. It stands on the treacherous southern shoreline of Lake Superior known as the "Graveyard of the Great Lakes" in an area with more shipwrecks than any other area of the lake.

• http://en.wikipedia.org/wiki/Whitefish Point Light