Whether you take the boat tour or rent a kayak yourself, the Apostle Islands and their caves are more experiences unique to Wisconsin. The Apostle Islands consist of 22 of Lake Superior's islands, and they've built up a grand reputation of being one of the most stunning natural wonders in the country. During the summer, the sea caves are completely accessible. However, by winter, each is overtaken by a great freeze, not unlike a scene from Game of Thrones. Once the ice is set, you can take a tour across to the islands on foot and explore the marvelous icy grottos.
