(Cattle Pavilion, 235' x 185', 1902, IA-77-02) in the state fairgrounds in Des Moines, Polk County, IA. IA163 (University) E. 1.7 miles from jct with I235 (exit 11A) in Des Moines, S. into the fairgrounds 0.5 miles to the barn. (N41 35.647 W93 33.095) Photo 11-3-01.