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| Lighthouse |
| Metro and City Park |
| National Forest |
| National Historic Landmark |
| National Historic Site |
| National Historical Park |
| National Memorial |
| National Park |
| National Recreation Area |
| National Seashore |
| National Wildlife Area |
| National Wildlife Refuge |
| State Fish Hatchery |
| State Fishery Area |
| State Forest |
| State Historic Site |
| State Memorial |
| State Natural Area |
| State Nature Preserve |
| State Nursery |
| State Park |
| State Preserve |
| State Recreation Area |
| State Reserve |
| State Wildlife Area |
| State Wildlife Management Area |
| State Wildlife Refuge |
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| Kankakee River State Park | State Park | 19.6 | Kankakee | Illinois |
| Hoosier Prairie State Nature Preserve | State Nature Preserve | 25 | Schererville | Indiana |
| Kaukakee State Fish and Wildlife Area | State Wildlife Area | 39.9 | North Judson | Indiana |
| Indiana Dunes State Park | State Park | 40.9 | Chesterton | Indiana |
| Mazonia State Fish and Wildlife Area | State Wildlife Area | 41 | Gardner | Illinois |
| Channahon Parkway State Park | State Park | 42.8 | Channahon | Illinois |
| Goose Lake Prairie State Park | State Park | 43.6 | Goose Lake | Illinois |
| Winamac State Fish and Wildlife Area | State Wildlife Area | 44.6 | Winamac | Indiana |
| Heidecke State Fish and Wildlife Area | State Wildlife Area | 45.9 | Morris | Illinois |
| Tippecanoe River State Park | State Park | 46.1 | Winamac | Indiana |