Old Grafton County Courthouse

The Old Grafton County Courthouse is a historic courthouse building at 1 Court Street in Plymouth, New Hampshire. This modest wood frame building was built in 1774 to serve as one of two courthouses for Grafton County, which had just been established; it is one of the oldest surviving civic structures in the state. It is now the museum of the Plymouth Historical Society. The building was listed on the National Register of Historic Places in 1982, and included in the Plymouth Historic District in 1986.
The Old Grafton County Courthouse stands in the town center of Plymouth, on the south side of Court Street just west of the town hall. It is a square wood frame structure, 34 feet on each side, with a truncated hip roof topped by a cupola. The open cupola has square posts at the corners, and is covered by a low-pitch hip roof. The main facade of the building faces north, and is three bays wide, with sash windows flanking the main entrance. The entrance is sheltered by a gabled hood supported by simple triangular bracketing. A small ell projects from the rear of the building. The interior of the building consists of a single large chamber, whose styling is reflective of 1876 alterations.

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