National Register Listings in Clermont County, Ohio
Bethel Methodist Church
Fagin, Aaron, House
Gaskins-Malany House
Groesbeck, Grace, House
Harmony Hill Dairy House
Krippendorf Estate
McKever, Lewis, Farmhouse
New Richmond Water Works and Electric Station
Pfarr Log House
Pleasant Hill
Promont
Roas-Ilhardt Farm and Winery
Ross-Gowdy House
Salt House
Schafer House
Stonelick Covered Bridge
U.S. Grant Birthplace and Grant Commemorative Sites Historic District
Williams House
Winter, William, Stone House
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.