List of Illinois State Historic Sites State Park

The Illinois Historic Preservation Division, formerly Illinois Historic Preservation Agency, is a governmental agency of the U.S. state of Illinois, and is a division of the Illinois Department of Natural Resources. It is tasked with the duty of maintaining State-owned historic sites, and maximizing their educational and recreational value to visitors or on-line users. In addition, it manages the process for applications within the state for additions to the National Register of Historic Places.