Minnesota Valley National Wildlife Refuge was created in 1976 to protect the native waterfowl and wetlands. In addition to protecting the habitat, it was also created in order to educate the general public about said habitat. The Bloomington Education and Visitor Center (the address provided here) will help you coordinate your visit. It also has an 8,000 square foot exhibit area. The refuge itself is 10,000 acres, and there are many hiking trails so you can explore to your heart's content. There are plenty of activities available, including canoeing, fishing, snowmobiling, and more. You can also walk your dog, weather permitting, and cross-country ski, again, weather permitting. There is a lot to do here.