(Irish Hills Towers) in Irish Hills NE of Onsted, Lenawee County, MI. MI50 NW 2.3 miles from jct with Onsted Rd. just N. of Onsted, E. on US12 3.4 miles to the towers on the S. side of the road at 8424. In a competition between the Michigan Observation Company and property owner Ed Kelley, the Irish Hills Towers, or Twin Towers, were built. They mark the highest point in southwestern Michigan at 1,400’ (430m) above sea level. Today, the towers are connected at the top by a bridge, allowing tourists to visit both structures and are open from Mothers Day through Labor Day. (N42 03.366 W84 09.389) Photo by Jack Schmidt 7-22-07.