St. Marys Historic District
Why it's listed
Centred on a triangular public space called the Diamond, the St. Marys Historic District covers about 170 acres of the city's oldest core, combining a two- and three-story brick and stone commercial district with surrounding residential streets of Foursquare, Italianate and other period houses. German Catholic settlers founded the community in December 1842 and named it Sanct Marian Stadt. Its best-known institution is St. Joseph's Convent, described as the first Benedictine convent in the United States. Lumber, followed by carbon and powdered metal manufacturing from 1899 onward, drove the growth reflected in the downtown buildings. Of 499 resources, 408 contribute to the district. The district is listed for its commercial and religious history and for its collection of architecture spanning many popular styles from the nineteenth and early twentieth centuries.
Machine-generated summary. This summary was generated by a language model from the official nomination document and has not been reviewed line by line by an editor. It may contain errors. Check the source document before relying on any detail. Source: nomination document (PDF) · catalog entry. Generated October 2026 (model claude-haiku-5-5, prompt v1.1-2026-10-29).
| Period of significance | 1842-1948 |
|---|---|
| Styles | Greek Revival, Italianate, Romanesque Revival, Gothic Revival, French Second Empire, Queen Anne, Neo-Classical Revival, Colonial Revival, American Foursquare, Tudor Revival, Bungalow |
| Areas of significance | Commerce, Religion, Architecture |
| Acreage | 170 |
| Boundary source | NPS cultural-resource GIS polygon |
| Full listing page | St. Marys Historic District (property record) |
What listing means for this property
This is a historic district. Buildings within its boundary are either contributing (they add to the district's significance) or non-contributing. Owners of contributing income-producing buildings can claim the 20% federal rehabilitation tax credit; homeowners should look at state credits. National Register districts impose no design review by themselves; a local historic district ordinance, if one exists, does (the difference explained).
General information, not legal or tax advice. Rules change; confirm with your State Historic Preservation Office or a qualified adviser.