Springfield Armory National Historic Site
Also known as: Armory Square
Why it's listed
Armory Square is a 54-acre hilltop district in Springfield, Massachusetts, once the administrative center of the Springfield Armory. Nearly thirty brick buildings with slate roofs, white trim and a consistent scale surround an 8.75-acre parade ground. They include the Greek Revival Commanding Officer's Quarters of 1845-46, the West Arsenal of 1807-08 (the oldest surviving building), the Main Arsenal with its clock tower, and a 764-foot cavalry stable and barracks from 1863. Congress established the Armory as a Federal arsenal in 1794, though it had already served as a Revolutionary War supply depot and was the target of Shays' Rebellion in 1787. Its workers helped develop interchangeable parts, and it was long the nation's principal small arms manufacturer. The Armory closed as a military post in 1967-68. Today a technical community college occupies much of the Square, and a museum in the Main Arsenal houses a major small arms collection. Two newer college buildings are considered intrusions.
Significance in brief: Established as a Federal arsenal in 1794, the Armory was a Revolutionary War ordnance depot and the site of the 1787 attack by Shays' Rebellion. It helped develop interchangeable parts, notably through Thomas Blanchard's 1822 gun-stock turning machine, and was long the nation's main small arms supplier. When it closed in 1967-68 it was the Federal Government's oldest manufacturing arsenal.
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 66000898, listed October 15, 1966. Summary generated October 2026 (model claude-sonnet-5-5, prompt v1.0-2026-10-29, confidence medium).
Key facts
| Address | Armory Sq., Springfield |
|---|---|
| County | Hampden County |
| Listed | October 15, 1966 |
| Reference number | 66000898 |
| Resource type | District |
| Period of significance | 1778-1968 |
| Architectural style | Greek Revival, Second Empire and other restrained, functional military styles in brick with slate roofs |
| Areas of significance | Military, Politics/Government |
| Level of significance | National |
| National Historic Landmark | Yes, designated December 19, 1960 |
| Status (as stated in the nomination) | Condition listed as good and altered. Most of the Square is occupied by a technical community college, and part of it houses a museum open to the public. Two modern college buildings are noted as intrusions that do not contribute. |
| Acreage | 54 |
| Coordinates | 42.10852, -72.58107 (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 66000898.
- Nomination form (PDF, National Archives) — catalog entry
- Wikipedia article (used for cross-checking only; text not reproduced here)
- Wikidata Q1193204
- This listing as JSON
Last updated October 2026. Found an error? See the editorial policy for how to report it.