(Confluence Tower) S. of Hartford, IL. IL3 S. 1.0 miles from jct with 7th St. in Hartford, W. on Piasa Ln. 0.1 miles, S. on Confluence Tower Dr. 0.15 miles. Park & cake is on the W. side of the tower. (N38 48.657 W90 06.048) Photos by Jack & June Schmidt 4-6-14.