Harmony Mill No. 3
United States historic place in Cohoes, New York. Added to the National Register in 1971, and a National Historic Landmark.

What it is
Harmony Mill No. 3, also known as the "Mastodon Mill", is a historic mill located at Cohoes in Albany County, New York. It was built in 1866–1868 and expanded 1871–1872. It is a four-story red brick structure on a stone foundation, with an additional story under the distinctive mansard roof. It features twin six story towers topped by mansard roofs and cast iron grillwork. It was known as the "Mastodon Mill" for the skeleton of a mastodon found while excavating the north section. It is the centerpiece of the Harmony Mills Historic District.
Text from Wikipedia, CC BY-SA 4.0.
The record
| Property type | Building |
| Address | 100 N. Mohawk St., Cohoes, NY |
| County | Albany County |
| Listed | Feb 18, 1971 |
| Reference number | 71000525 |
| Type of place | historic site |
| Contributing resources | 1 buildings |
The nomination form, the document that argues why this place matters, is in the National Archives: Read the nomination ↗
Visiting
| Address | 100 N. Mohawk St., Cohoes, NY |
| Coordinates | 42.78167, -73.70493 · Directions ↗ |
| Nearest national park unit | Saratoga National Historical Park · 15 mi · on Park Atlas |
Explore
Map
Nearby in Albany County
Reference
Sources
Location, dates, type and contributing counts come from the National Park Service's National Register spatial data. Construction date, architect, style, photograph and encyclopedia link come from Wikidata and Wikimedia Commons, matched on reference number 71000525. Nothing here is transcribed by hand. The description under "What it is" is the opening of the Wikipedia article, CC BY-SA.


