(Piatt Castle, 1864) E. of West Liberty, Monroe Township, Logan County, OH. OH245 E. 1.4 miles from jct with US68 in West Liberty, S. on TR47 0.1 miles to the castle on the E. side of the road at 10051. (N40 15.061 W83 43.616) Photo by Jack & June Schmidt 6-6-15.