America the Beautiful | Illinois Tall Grass Prairie Illinois was once covered with tall grass prairie. This fertile land has been mostly converted to farming land. See The Great American Prairie | a 7 Image Story for additional information and images, Although Illinois was on on the far eastern edge of the Great American Prairie, it still contains several restored prairies to remind us of the natural beauty. For the whole story with all images, see America the Beautiful | a 7 Image Story.
