A tour boat from Mackinaw City to, and under, the Mackinac Bridge. (The world's third longest suspension bridge.) The crew does provide commentary about the area, the origins of The Ugly Annie tour boat, The Mackinac Bridge and the United States Coast Guard Cutter Mackinaw. an icebreaker that is now a museum. The tour is approximately one hour long and definitely gives you unique photo opportunities of the Mackinac Bridge. Adult beverages and soft drinks are available for a nominal fee. My family thoroughly enjoyed this brief tour and history lesson. I recommend this tour to others.