Horicon is where you'll find the Horicon Marsh, a 32,000-acre complex of open water, wetlands, prairie and woods. The marsh is home to one of the widest arrays of plants, animals and birds in the Midwest and is the largest freshwater cattail marsh in North America. There are a number of ways to explore the marsh including canoeing, kayaking, auto tours, guided boat tours, hiking trails or a stroll on the popular floating boardwalk located in the northwest corner of the marsh. Stop by the marsh’s International Education Center for maps and area information.