Canal Locks

Historical marker location:

1131 Central Avenue, Middletown, Ohio

( Marker is at the intersection of Central Avenue (Ohio Route 122) and N. Verity Parkway (Ohio Route 73), on the right when traveling west on Central Avenue.)

Port Middletown Plaza.

The Great Serpent Mound, located in Adams County, Ohio, is a prehistoric effigy mound in the shape of a serpent that is more than 1,300 feet long. It is one of the largest effigy mounds in the world and is estimated to have been built by the Adena culture more than 1,000 years ago.