Parks & Recreation — Mercer County, Ohio

Historic & Cultural Sites

30 sites on the National Register of Historic Places.

• Cassella Catholic Church and Rectory
• Celina Main Street Commercial Historic District
• Chickasaw School and Rectory
• Coldwater Catholic Church Complex
• Fort Recovery Site
• Gast, Matthias, House and General Store
• Godfrey, Sen. Thomas J., House
• Grand Lake St. Marys Lighthouse
• Gruenwald Convent
• Immaculate Conception Catholic Church Complex
• Maria Stein Catholic Church and Rectory
• Maria Stein Convent
• Mendon Town Hall
• Morvilius Opera House
• Otis Hospital
• Philothea Catholic Church and Priest House
• Riley, Calvin E., House
• St. Aloysius Catholic Church
• St. Anthony Catholic Church, Padua
• St. Bernard Catholic Church and Rectory

Source: National Register of Historic Places.

Data provenance: aggregated from town-level sources, county.json. Rebuilt 2026-04-13T15:43:29.862242+00:00; aggregated 2026-04-13T16:08:24.966432+00:00.