(Dakota Dunes) in North Sioux City, Union County, SD. Dakota Dunes Blvd W. 0.25 miles from jct with I29 exit 1, NW on Sioux Point Rd. 0.1 miles, SW (curves W.) on Tower Rd. 0.25 miles to the tower on the N. side of the road. (7-10-09, N42 30.198 W96 30.001) Photos by Jack & June Schmidt.