Watertown Arsenal
Watertown Arsenal Historic District | |
Aerial view, 1921 | |
| Location | Watertown, Massachusetts |
|---|---|
| Coordinates | 42°21′44″N 71°9′58″W / 42.36222°N 71.16611°W |
| Built | 1816 |
| NRHP reference No. | 99000498 |
| Added to NRHP | May 14, 1999 |
The Watertown Arsenal was a major American arsenal located on the northern shore of the Charles River in Watertown, Massachusetts. The site is now registered on the ASCE's List of Historic Civil Engineering Landmarks and on the US National Register of Historic Places, and it is home to a park, restaurants, mixed use office space, and formerly served as the national headquarters for athenahealth.