(Ice Cream Capital) in Le Mars, Plymouth County, IA. IA3 (Plymouth St.) E. 0.6 miles from jct with US75 (5th Av.), S. on 3rd Av. 0.9 miles to the tower on the E. side of the road. (7-12-09, N42 46.827 W96 09.696) Photo by Jack & June Schmidt.