Illinois Inventory is a comprehensive, state-wide inventory of public land, natural resources, and cultural resources located in the state of Illinois. It includes parks, wildlife refuges, nature preserves, historic sites, archaeological sites, and more. The inventory is maintained and updated by the Illinois Natural Resources Information System (IRIS) and is used to inform land management decisions, as well as research and education. The inventory is divided into different categories depending on the type of resource, such as land use, wildlife, and cultural resources. Each category is further divided into subcategories for easier navigation. Additionally, each entry in the inventory includes detailed information about the resource, such as location, size, ownership, and management.