Fort Banks Mortar Battery
Also known as: Fort Banks
Why it's listed
Fort Banks Mortar Battery is a concrete coastal artillery emplacement in Winthrop, Massachusetts, once the main feature of a military reservation guarding Boston Harbor. Built in 1892-96 on a modified Abbot Quad plan, it has four large pits, two named Battery Sanford Kellogg and two Battery Benjamin Lincoln, linked by underground galleries and magazines. Major rebuilding in 1912-16 enlarged the pits and added new magazines, a degree of change not known at any other mortar battery. Surviving details include overhead shell conveyor rails, a Telautograph booth for sending firing orders, and triangular ammunition-handling rooms found only here. A separate protected switchboard from about 1920 also remains. Today the site is partly open and partly buried beneath public housing, a condominium complex and a field house. The town acquired it in 1966 and uses some tunnels for storage. Its engineering, design and military role underlie its recognition, with a period of significance of 1892-1966.
Significance in brief: The nomination argues it is significant in architecture, engineering and military history. It is a modified "Abbot Quad" design, one of only six built, and the only one with triangular ammunition-handling room complexes. It is also the only mortar battery known to have been so extensively modified, with 1906-type batteries grafted onto the original design.
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 07000144, listed March 12, 2007. Summary generated October 2026 (model claude-sonnet-5-5, prompt v1.0-2026-10-29, confidence medium).
Key facts
| Address | Kennedy Dr., Winthrop |
|---|---|
| County | Suffolk County |
| Listed | March 12, 2007 |
| Reference number | 07000144 |
| Resource type | Site |
| Period of significance | 1892-1966 |
| Criteria |
|
| Areas of significance | Architecture, Engineering, Military |
| Level of significance | National |
| Status (as stated in the nomination) | Partly exposed and partly buried under modern buildings; the town uses some rooms for storage of public works and civil defense equipment, and interior tunnels and magazines are described as in good condition. |
| Acreage | 2.7 |
| Coordinates | 42.39086, -70.99080 (NPS GIS) |
What listing means for this property
Sites (archaeological sites, battlefields, landscapes) are often listed with a restricted address to protect them from looting or disturbance. Listing is honorary for private owners; federal undertakings on or near the site go through Section 106 review, and state laws may protect burials and artefacts regardless of listing.
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 07000144.
- Nomination form (PDF, National Archives) — catalog entry
- Wikipedia article (used for cross-checking only; text not reproduced here)
- Wikidata Q5470771
- This listing as JSON
Last updated October 2026. Found an error? See the editorial policy for how to report it.