Found 3 places
Latitude: 40.5092 (40°30′33″N), Longitude: -88.9839 (88°59′2″W)
Latitude: 40.5106 (40°30′38″N), Longitude: -89.0011 (89°0′4″W)
Site: maps.illinoisstate.edu/locations/eyestone
Latitude: 40.514 (40°30′50″N), Longitude: -88.9955 (88°59′44″W)