Brayton Grist Mill
- Also Known As: Marcy Blacksmith Museum
- Address: Mashamoquet Rd (US 44)
Brayton Grist Mill is located on the eastern bank of Mahamoquet Brook south of Route 44, the historic Connecticut-Rhode Island Turnpike, just inside the main entrance to Mashamoquet Brook State Park. Originally one of several water-powered nineteenth-century industries clustered along the stream in the hollow, the mill now stands alone on the forested bank. While there is no evidence of the dam known to have been located to the north (upstream), the ruins of a diversion canal and the stone foundation set into the bank of another structure to the south (downstream) of Brayton Mill survive. The watercourses for the mill have either been obliterated or were entirely underground and survive unseen.
The vernacular structure dates to the last decade of the nineteenth century, replacing or incorporating an earlier grist mill on the site that is believed to have burned. Of post-and-beam construction utilizing salvaged materials, the four-story, gable-ended mill is set into the bank with two floors above grade. The facade (east elevation) has paneled sliding doors on rolling tracks on the third and fourth levels and a separate entrance to the staircase servicing the fourth floor. All windows are double-hung six-over-six with plain surrounds, and the exterior is sheathed with both plain and beaded vertical board siding. - NRHP, 12 May 1986