(Heritage) across Shiawassee River in Curwood Castle Park in Owosso, Shiawassee County, MI. Main St. E. 1 block from jct with Shiawassee St., N. on Curwood Castle Dr. 0.1 miles to the bridge on the E. side of the road. (N42 59.933 W84 10.482) Photo by Mark Comstock 10-22-04.