Market Square
Why it's listed
Miamisburg's town center in Montgomery County, Ohio, is a district of roughly 45 to 50 structures gathered around Market Square, where Main Street meets Central Avenue. At its heart is the brick Greek Revival Market Building of 1851, built on land set aside for public use when the town was platted in 1818. It began as an open covered market with meeting rooms above, and its arches were later bricked in for use as a jail and police station. Nearby are the Second Empire Baum Opera House of 1884, the Italianate Groby Bank of 1883, the Gwinner Block, the Liesenhoff Building and the McGuire House. The district was recognized because it preserves a cohesive collection of mid to late nineteenth century vernacular commercial buildings, with a few residences, several of them little altered. Modern intrusions, including a service station and parking lots, are acknowledged within the boundaries.
Significance in brief: The nomination argues the district is architecturally significant for its many mid to late nineteenth century vernacular commercial buildings and a few residences in various styles. Several buildings remain virtually unchanged, and such a cohesive, well-preserved grouping is described as unusual. The district also marks the historic center of a town platted in 1818.
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) · National Archives catalog entry. NRHP reference 75001510, listed November 10, 1975. Summary generated October 2026 (model claude-sonnet-5-5, prompt v1.0-2026-10-29, confidence medium).
Key facts
| Address | Both sides of Main St. including jcts. at Central and Linden Aves., Miamisburg |
|---|---|
| County | Montgomery County |
| Listed | November 10, 1975 |
| Reference number | 75001510 |
| Resource type | District |
| Architectural style | Greek Revival (Market Building), Second Empire (Baum Opera House, Gwinner Block), High Victorian Italianate (Groby Bank, Liesenhoff Building, McGuire House), and mixed nineteenth century vernacular commercial |
| Areas of significance | Architecture |
| Level of significance | Local |
| Status (as stated in the nomination) | Condition is marked fair and altered. The Market Building's upper floor is unused, the ground level holds a shop and a community meeting room, and the Baum Opera House has been renovated as a dinner theater. Several intrusions are noted, including a gas station and parking lots. |
| Acreage | 10.4 |
| Coordinates | 39.64121, -84.30084 (NPS GIS) |
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.
Sources and further reading
- National Park Service, National Register of Historic Places database (snapshot May 2026), reference 75001510.
- Nomination form (PDF, National Archives) — catalog entry
- Wikipedia article (used for cross-checking only; text not reproduced here)
- Wikidata Q14716655
- This listing as JSON
Last updated October 2026. Found an error? See the editorial policy for how to report it.