The image is a photograph of a historical marker located in a park. The marker is rectangular in shape and has a brown background with white text. The text reads "Ohio Historical Marker: The Cincinnati Observatory, Lighthouse of the Sky." Below the text, there is a small illustration of a lighthouse with a blue sky and white clouds in the background. On the right side of the marker, there are trees and shrubs, and on the left side, there appears to be a grassy area with a tree trunk.