Notable as the largest freshwater island in a lake on Earth, Manitoulin has all of the trappings of the Great Lakes region: plenty of forest, vast expanses of water, and everything wilderness in between in which to get yourself lost. While most tourists will be relaxing, golfing, and lay down for massages, you can be taking on a number of half-day treks around the island. The two most notable may have to be the short hike to the small, picturesque Bridal Veil Falls near Kagawong or the "Cup and Saucer" trail that runs along a stretch of 70 meter (230 foot) cliffs, allowing for the best views on all of Manitoulin.
Most show up here to enjoy boating either on Lake Huron or the lake on the island in the lake (now it's getting complicated) known as Lake Mindemoya. You can stay at a handful of campgrounds that perch on the island's lakes, where you may also rent boats or canoes to enjoy the water, while there is also accommodation to be had in any of the dozen or so tiny communities.
During the summer, you may visit via the M.S.Chi-Cheemaun ferry that travels between Tobermory and South Baymouth numerous times a day, while the Swing Bridge in Little Current serves as the most direct route on land. Visit the tourism page for more ideas on what you could be doing with yourself when visiting Manitoulin Island.