(Discovery Tower) in Discovery 1 Park in Johnstone Park in Bartlesville, Washington County, OK. OK123a (Hensley Blvd) E. 1.6 miles from jct with US60, N. on Cherokee Av. 0.2 miles to the tower on the E. side of the road. (N36 45.344 W95 58.370) Photos by Jack & June Schmidt 5-17-09.