Historic Districts
Vacant / Not In Use
Ohio - Mercer County
Mercer County Ohio has 29 places on the National Register of Historic Places including 24 places of Statewide significance. Significant places include Cassella Catholic Church and Rectory, Chickasaw School and Rectory, Coldwater Catholic Church Complex, Fort Recovery Site and Godfrey, Sen. Thomas J., House.

Several famous people are associated with these Mercer County historic places including Sen. Thomas J. Godfrey, Father Francis Brunner and Matthias Gast.

Some of the country's most noteable architects helped create the Mercer County places including J.A. De Curtins, Andrew De Curtins, J.F. Sheblessy, Medland Bros., Adolph Druiding, John Burkhart, J.A. DeCurtins, Philo Wallischeck, Luther Peters and Anton DeCurtins. Prominent architectural styles found in Mercer Country are Gothic, Romanesque and Gothic Revival.

Cassella Catholic Church and Rectory (added 1979 - - #79002822)
Also known as Nativity of the Blessed Virgin;Cappella
RT. 119 , Cassella
Nyttend, Public domain, via Wikimedia Commons
Historic Significance:
Event, Architecture/Engineering
Architect, builder, or engineer:
Unknown
Architectural Style:
Gothic
Area of Significance:
Architecture, Religion
Period of Significance:
1900-1924, 1875-1899, 1850-1874
Owner:
Private
Historic Function:
Religion
Historic Sub-function:
Church Related Residence, Religious Structure
Current Function:
Religion
Current Sub-function:
Church Related Residence, Religious Structure
More Information:
archives document
Celina Main Street Commercial Historic District (added 1982 - - #82001474)
Roughly bounded by Walnut, W. Livingston, Ash and Warren Sts. , Celina
Christopher L. Riley, CC BY-SA 4.0, via Wikimedia Commons
Historic Significance:
Architecture/Engineering
Architectural Style:
Late Victorian
Area of Significance:
Architecture
Period of Significance:
1925-1949, 1900-1924, 1875-1899, 1850-1874
Owner:
Local, Private
Historic Function:
Commerce/Trade, Government, Government
Historic Sub-function:
City Hall, Courthouse
Current Function:
Commerce/Trade, Government, Government
Current Sub-function:
City Hall, Courthouse
More Information:
archives document
Chickasaw School and Rectory (added 1979 - - #79002848)
Also known as Precious Blood Catholic Rectory
Maple St. , Chickasaw
Nyttend, Public domain, via Wikimedia Commons
Historic Significance:
Event, Architecture/Engineering
Architect, builder, or engineer:
De Curtins
Architectural Style:
Italianate
Area of Significance:
Architecture, Religion
Period of Significance:
1900-1924
Owner:
Local, Private
Historic Function:
Religion
Historic Sub-function:
Church Related Residence, Church School
Current Function:
Religion
Current Sub-function:
Church Related Residence, Church School
More Information:
archives document
Coldwater Catholic Church Complex (added 1979 - - #79002832)
Also known as Holy Trinty Catholic Church Complex
E. Main and 2nd Sts. , Coldwater
Nyttend, Public domain, via Wikimedia Commons
Historic Significance:
Event, Architecture/Engineering
Architect, builder, or engineer:
De Curtins
Architectural Style:
Gothic, Renaissance
Area of Significance:
Architecture, Social History
Period of Significance:
1900-1924, 1875-1899
Owner:
Local, Private
Historic Function:
Religion
Historic Sub-function:
Church Related Residence, Church School, Religious Structure
Current Function:
Religion
Current Sub-function:
Church Related Residence, Church School, Religious Structure
More Information:
archives document
Fort Recovery Site (added 1970 - - #70000509)
OH 49 , Fort Recovery
Nyttend, Public domain, via Wikimedia Commons
Historic Significance:
Event
Area of Significance:
Military
Period of Significance:
1750-1799
Owner:
State
Historic Function:
Defense
Historic Sub-function:
Battle Site, Fortification
Current Function:
Landscape, Recreation And Culture
Current Sub-function:
Museum, Park
More Information:
archives document
Gast, Matthias, House and General Store (added 1978 - - #78002139)
Also known as Martha Gast House and Gagel Hardware Storage Room
OH 119 , Maria Stein
Nyttend, Public domain, via Wikimedia Commons
Historic Significance:
Event, Person, Architecture/Engineering
Architect, builder, or engineer:
Gast,Matthias
Architectural Style:
No Style Listed
Historic Person:
Gast,Matthias
Significant Year:
1867, 1852
Area of Significance:
Exploration/Settlement, Architecture, Commerce
Period of Significance:
1850-1874
Owner:
Private
Historic Function:
Commerce/Trade, Domestic
Historic Sub-function:
Department Store, Single Dwelling
Current Function:
Commerce/Trade, Domestic
Current Sub-function:
Single Dwelling, Warehouse
More Information:
archives document
Godfrey, Sen. Thomas J., House (added 1980 - - #80003159)
602 W. Market St. , Celina
Nyttend, Public domain, via Wikimedia Commons
Historic Significance:
Person, Architecture/Engineering
Architect, builder, or engineer:
Peters,Luther
Architectural Style:
Gothic
Historic Person:
Godfrey,Sen. Thomas J.
Significant Year:
1876
Area of Significance:
Architecture
Period of Significance:
1875-1899
Owner:
Private
Historic Function:
Domestic
Historic Sub-function:
Single Dwelling
Current Function:
Domestic
Current Sub-function:
Single Dwelling
More Information:
archives document
Grand Lake St. Marys Lighthouse (added 1982 - - #82003614)
Grand Lake St. Marys-Northwood Addition , Celinda
Nyttend, Public domain, via Wikimedia Commons
Historic Significance:
Architecture/Engineering
Architect, builder, or engineer:
Unknown
Architectural Style:
No Style Listed
Area of Significance:
Landscape Architecture
Period of Significance:
1875-1899
Owner:
Private
Historic Function:
Transportation
Historic Sub-function:
Water-Related
Current Function:
Transportation
Current Sub-function:
Water-Related
More Information:
archives document
Gruenwald Convent (added 1979 - - #79002813)
Also known as Green Forest Convent;McDowell House
.5 mi. S of Cassella , Cassella
Nyttend, Public domain, via Wikimedia Commons
Historic Significance:
Event, Person
Historic Person:
Brunner,Father Francis
Significant Year:
1854
Area of Significance:
Religion
Period of Significance:
1850-1874
Owner:
Private
Historic Function:
Religion
Historic Sub-function:
Religious Structure
Current Function:
Domestic
Current Sub-function:
Single Dwelling
More Information:
archives document
Immaculate Conception Catholic Church Complex (added 1979 - - #79002833)
Anthony and Walnut Sts. , Celina
Nheyob, CC BY-SA 3.0, via Wikimedia Commons
Historic Significance:
Architecture/Engineering
Architect, builder, or engineer:
De Curtins,Andrew, Burkhart,John
Architectural Style:
Romanesque, Other
Area of Significance:
Architecture
Period of Significance:
1925-1949, 1900-1924
Owner:
Local, Private
Historic Function:
Religion
Historic Sub-function:
Church Related Residence, Church School, Religious Structure
Current Function:
Religion
Current Sub-function:
Church Related Residence, Church School, Religious Structure
More Information:
archives document
Maria Stein Catholic Church and Rectory (added 1979 - - #79002828)
Also known as Saint John Catholic Church and Rectory
St. John's Rd. and OH 119 , Maria Stein
Nyttend, Public domain, via Wikimedia Commons
Historic Significance:
Architecture/Engineering
Architect, builder, or engineer:
Druiding, Adolph, De Curtins,J.A.
Architectural Style:
Gothic
Area of Significance:
Art, Architecture
Period of Significance:
1900-1924, 1875-1899
Owner:
Private
Historic Function:
Religion
Historic Sub-function:
Church Related Residence, Religious Structure
Current Function:
Religion
Current Sub-function:
Church Related Residence, Religious Structure
More Information:
archives document
Maria Stein Convent (added 1976 - - #76001490)
Also known as Maria Stein Shrine;Shrine of the Holy Relics
St. John's and Rolfes Rd. , Maria Stein
Nyttend, Public domain, via Wikimedia Commons
Historic Significance:
Event
Area of Significance:
Religion
Period of Significance:
1900-1924, 1875-1899, 1850-1874, 1825-1849
Owner:
Private
Historic Function:
Religion
Historic Sub-function:
Church School, Religious Structure
Current Function:
Religion
Current Sub-function:
Church School, Religious Structure
More Information:
archives document
Mendon Town Hall (added 1978 - - #78002140)
S. Main St. , Mendon
Nyttend, Public domain, via Wikimedia Commons
Historic Significance:
Architecture/Engineering, Event
Architect, builder, or engineer:
Christian,William W.
Architectural Style:
No Style Listed
Area of Significance:
Politics/Government, Architecture, Social History
Period of Significance:
1925-1949, 1900-1924
Owner:
Local
Historic Function:
Government, Social
Historic Sub-function:
City Hall, Civic
Current Function:
Government, Recreation And Culture, Social
Current Sub-function:
City Hall, Civic, Theater
More Information:
archives document
Otis Hospital (added 1980 - - #80003160)
441 E. Market St. , Celina
Nyttend, Public domain, via Wikimedia Commons
Historic Significance:
Architecture/Engineering, Event
Architect, builder, or engineer:
Hulsken & Strong
Architectural Style:
Prairie School
Area of Significance:
Architecture, Health/Medicine
Period of Significance:
1900-1924, 1850-1874
Owner:
Private
Historic Function:
Domestic, Health Care
Historic Sub-function:
Hospital, Single Dwelling
Current Function:
Vacant/Not In Use
More Information:
archives document
Philothea Catholic Church and Priest House (added 1979 - - #79002823)
Also known as St. Mary's
Philothea Rd. between St. Henry and Coldwater , Philothea
Nyttend, Public domain, via Wikimedia Commons
Historic Significance:
Architecture/Engineering
Architect, builder, or engineer:
Unknown
Area of Significance:
Architecture
Period of Significance:
1900-1924, 1850-1874
Owner:
Private
Historic Function:
Religion
Historic Sub-function:
Church Related Residence, Religious Structure
Current Function:
Religion
Current Sub-function:
Church Related Residence, Religious Structure
More Information:
archives document
Riley, Calvin E., House (added 1978 - - #78002137)
Also known as Mercer County Historical Museum
130 E. Market St. , Celina
Nyttend, Public domain, via Wikimedia Commons
Historic Significance:
Architecture/Engineering, Event
Architect, builder, or engineer:
Unknown
Architectural Style:
Queen Anne
Area of Significance:
Exploration/Settlement, Architecture, Industry
Period of Significance:
1875-1899, 1850-1874, 1825-1849, 1800-1824
Owner:
Local
Historic Function:
Domestic
Historic Sub-function:
Single Dwelling
Current Function:
Recreation And Culture
Current Sub-function:
Museum
More Information:
archives document
St. Aloysius Catholic Church (added 1979 - - #79002824)
OH 274 and OH 127 , Carthagena
Nyttend, Public domain, via Wikimedia Commons
Historic Significance:
Architecture/Engineering
Architect, builder, or engineer:
DeCurtins,Anton
Architectural Style:
Gothic
Area of Significance:
Architecture
Period of Significance:
1900-1924, 1875-1899
Owner:
Private
Historic Function:
Religion
Historic Sub-function:
Religious Structure
Current Function:
Religion
Current Sub-function:
Religious Structure
More Information:
archives document
St. Anthony Catholic Church, Padua (added 1979 - - #79002821)
Rt. 49 and St. Anthony Rd. , St. Anthony
Nyttend, Public domain, via Wikimedia Commons
Historic Significance:
Architecture/Engineering
Architect, builder, or engineer:
De Curtins,J.A.
Area of Significance:
Architecture
Period of Significance:
1850-1874
Owner:
Private
Historic Function:
Religion
Historic Sub-function:
Religious Structure
Current Function:
Religion
Current Sub-function:
Religious Structure
More Information:
archives document
St. Bernard Catholic Church and Rectory (added 1979 - - #79002842)
Also known as Burkettsville Catholic Church and Rectory
Main St. , Burketsville
Nyttend, Public domain, via Wikimedia Commons
Historic Significance:
Architecture/Engineering
Architect, builder, or engineer:
Sheblessy,J.F., Medland Bros.
Architectural Style:
Romanesque
Area of Significance:
Architecture
Period of Significance:
1900-1924
Owner:
Private
Historic Function:
Religion
Historic Sub-function:
Church Related Residence, Religious Structure
Current Function:
Religion
Current Sub-function:
Church Related Residence, Religious Structure
More Information:
archives document
St. Charles Seminary and Chapel (added 1979 - - #79002840)
Also known as St. Charles Borromeo Seminary and Chapel
.5 mi. S of Carthagena, off OH 127 , Carthagena
Nyttend, Public domain, via Wikimedia Commons
Historic Significance:
Architecture/Engineering
Architect, builder, or engineer:
Unknown
Architectural Style:
Romanesque, Gothic
Area of Significance:
Architecture
Period of Significance:
1900-1924
Owner:
Private
Historic Function:
Religion
Historic Sub-function:
Religious Structure
Current Function:
Religion
Current Sub-function:
Religious Structure
More Information:
archives document
St. Francis Catholic Church and Rectory (added 1979 - - #79002837)
Cranberry and Ft. Recovery-Minster Rd. , Cranberry Prairie
Nyttend, Public domain, via Wikimedia Commons
Historic Significance:
Event, Architecture/Engineering
Architect, builder, or engineer:
De Curtins
Architectural Style:
Mission/Spanish Revival, Gothic
Area of Significance:
Architecture, Social History
Period of Significance:
1900-1924
Owner:
Private
Historic Function:
Religion
Historic Sub-function:
Church Related Residence, Religious Structure
Current Function:
Religion
Current Sub-function:
Church Related Residence, Religious Structure
More Information:
archives document
St. Henry Catholic Church (added 1979 - - #79002829)
Main St. , St. Henry
Nyttend, Public domain, via Wikimedia Commons
Historic Significance:
Event, Architecture/Engineering
Architect, builder, or engineer:
De Curtins,J.A.
Architectural Style:
Italian Villa, Gothic
Area of Significance:
Architecture, Social History
Period of Significance:
1900-1924, 1875-1899
Owner:
Private
Historic Function:
Religion
Historic Sub-function:
Church Related Residence, Church School, Religious Structure
Current Function:
Religion
Current Sub-function:
Church Related Residence, Church School, Religious Structure
More Information:
archives document
St. Joseph Catholic Church and Rectory (added 1979 - - #79002820)
Sawmill and St. Joe Rds. , St. Joe
Nyttend, Public domain, via Wikimedia Commons
Historic Significance:
Event, Architecture/Engineering
Architect, builder, or engineer:
DeCurtins,J.A.
Architectural Style:
No Style Listed
Area of Significance:
Architecture, Religion
Period of Significance:
1900-1924, 1850-1874
Owner:
Private
Historic Function:
Religion
Historic Sub-function:
Church Related Residence, Religious Structure
Current Function:
Religion
Current Sub-function:
Church Related Residence, Religious Structure
More Information:
archives document
St. Paul's Catholic Church and Rectory (added 1979 - - #79002827)
R.R. 1, Ft. Recovery , Sharpsburg
Nyttend, Public domain, via Wikimedia Commons
Historic Significance:
Event, Architecture/Engineering
Architect, builder, or engineer:
De Curtins,J.A.
Architectural Style:
Gothic
Area of Significance:
Architecture, Religion
Period of Significance:
1900-1924, 1875-1899
Owner:
Private
Historic Function:
Religion
Historic Sub-function:
Church Related Residence, Religious Structure
Current Function:
Religion
Current Sub-function:
Church Related Residence, Religious Structure
More Information:
archives document
St. Peter Catholic Church and Rectory (added 1979 - - #79002831)
St. Peter and Philothea Rds. , St. Peter
Fletcher6, Public domain, via Wikimedia Commons
Historic Significance:
Architecture/Engineering
Architect, builder, or engineer:
Unknown
Architectural Style:
No Style Listed
Area of Significance:
Architecture
Period of Significance:
1900-1924
Owner:
Private
Historic Function:
Religion
Historic Sub-function:
Church Related Residence, Religious Structure
Current Function:
Religion
Current Sub-function:
Church Related Residence, Religious Structure
More Information:
archives document
St. Rose Catholic Church Complex (added 1979 - - #79002838)
Main St. , St. Rose
Nyttend, Public domain, via Wikimedia Commons
Historic Significance:
Architecture/Engineering
Architect, builder, or engineer:
Unknown
Architectural Style:
Gothic
Area of Significance:
Architecture
Period of Significance:
1900-1924, 1875-1899
Owner:
Private
Historic Function:
Recreation And Culture, Religion
Historic Sub-function:
Church Related Residence, Religious Structure
Current Function:
Religion
Current Sub-function:
Church Related Residence, Church School, Religious Structure
More Information:
archives document
St. Sebastian Catholic Church and Rectory (added 1979 - - #79002830)
Sebastian Rd. and OH 716-A , St. Sebastian
Nyttend, Public domain, via Wikimedia Commons
Historic Significance:
Architecture/Engineering
Architect, builder, or engineer:
De Curtins,Andrew
Architectural Style:
Gothic
Area of Significance:
Architecture
Period of Significance:
1900-1924
Owner:
Private
Historic Function:
Religion
Historic Sub-function:
Church Related Residence, Religious Structure
Current Function:
Religion
Current Sub-function:
Church Related Residence, Religious Structure
More Information:
archives document
St. Wendelin Catholic Church, School, and Rectory (added 1979 - - #79002885)
Ft. Recovery-Minster Rd. and Township Line , Wendelin
Nyttend, Public domain, via Wikimedia Commons
Historic Significance:
Architecture/Engineering
Architect, builder, or engineer:
Unknown
Architectural Style:
Gothic
Area of Significance:
Architecture
Period of Significance:
1900-1924, 1875-1899, 1850-1874
Owner:
Private
Historic Function:
Religion
Historic Sub-function:
Church Related Residence, Church School, Religious Structure
Current Function:
Religion
Current Sub-function:
Church Related Residence, Church School, Religious Structure
More Information:
archives document
Wallischeck Homestead (added 1978 - - #78002138)
N of Fort Recovery , Fort Recovery
Nyttend, Public domain, via Wikimedia Commons
Historic Significance:
Event, Architecture/Engineering
Architect, builder, or engineer:
Wallischeck,Philo
Architectural Style:
Other
Area of Significance:
Art, Architecture
Period of Significance:
1875-1899, 1850-1874
Owner:
Private
Historic Function:
Agriculture/Subsistence, Domestic
Historic Sub-function:
Agricultural Outbuildings, Secondary Structure, Single Dwelling
Current Function:
Agriculture/Subsistence, Domestic
Current Sub-function:
Agricultural Outbuildings, Secondary Structure, Single Dwelling
More Information:
archives document
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