National Lighthouse Day is Friday, August 7. Did you know that: Michigan has around 150 lighthouses, the most of any U.S. state. The first lighthouses in Michigan were built between 1818 and 1822. They were built to project light at night and to serve as a landmark during the day to safely guide the passenger ships and freighters traveling the Great Lakes. (http://www.michiganlookup.com/michigan/facts.php). Visit one of Michigan's beautiful lighthouses with a Michigan Activity Pass (http://www.michiganactivitypass.info)! Big Sable Lighthouse, Ludington - http://www.splka.org/lights.html Grand Traverse Lighthouse Museum, Northport - http://www.grandtraverselighthouse.com/ Little Sable Point Lighthouse, Mears - http://www.splka.org/littlesable.html Ludington Breakwater Lighthouse, Ludington - http://www.splka.org/ludingtonbreak.html Shepler's Lighthouse Cruises, Mackinaw City - http://sheplersferry.com/cruises/information/#lighthouse White River Light Station and Museum, Whitehall - http://www.splka.org/whiteriver.html