What’s an Estuarium? A gathering place for learning and play! The term is a combination of words “estuary” and “museum.” Join us in the exhibit hall to learn more about how fresh water, ecology, and culture coexist and thrive in the Lake Superior watershed. First Saturday of each month 10:00 a.m. - 5:00 p.m. Stay tuned for special “first Saturday” activities at the Estuarium hosted by the Friends of the Lake Superior Reserve.