Old State House (Boston)

Old State House
Looking southwest in 2013
Location206 Washington Street
Boston, Massachusetts, U.S.
Coordinates42°21′31.57″N 71°3′28.1″W / 42.3587694°N 71.057806°W / 42.3587694; -71.057806
Area28,000 square feet (2,600 m2)
Built1713 (1713)
ArchitectRepairs and alterations: Thomas Dawes (c. 1772)
Alterations: Isaiah Rogers (1830)
Restoration: George Albert Clough (1881–1882)
Renovation: Joseph Everett Chandler (1909–1910)
Renovation: Goody, Clancy and Associates (1991)
Architectural styleGeorgian
Part ofBoston National Historical Park (ID74002222)
NRHP reference No.66000779
Significant dates
Added to NRHPOctober 15, 1966
Designated NHLOctober 9, 1960
Designated CPOctober 26, 1974

The Old State House (originally the Second Town House; also the Court House, Province House, or Old Provincial State House) is a historic building at 206 Washington Street in Boston, Massachusetts, United States. Completed in 1713, it is the city's oldest extant public building, hosting the judicial, legislative, and executive branches of the Massachusetts provincial and state governments during the 18th century. At 65 feet (20 meters), it was also the tallest building in Boston until 1745. One of the landmarks on Boston's Freedom Trail, the Old State House is designated a National Historic Landmark and a Boston Landmark.

The building replaces the First Town House on the same site, which burned down in 1711. The Second Town House was itself rebuilt after being gutted by fire in 1747. The state legislature, the Massachusetts General Court, moved to the New State House in 1798, after which the Old State House was used by the municipal government. It was used as Boston's city hall after Isaiah Rogers refurbished the structure in 1830. After a new city hall opened in 1841, the structure was used by commercial tenants for four decades. George A. Clough renovated the Old State House in 1881–1882, following threats of demolition, and the Bostonian Society took over much of the building. The Old State House has functioned as a history museum since then, undergoing additional renovations in the 20th and 21st centuries.

The building has a brick facade and rises 2+12 stories above a partially raised basement. The facade is divided vertically into bays, with entrances on three sides and a balcony facing east. It has a gable roof with decorations such as a lion and unicorn, topped by a central tower. The interior has been modified repeatedly; the modern layout dates to Clough's renovation, with design details from various eras. The basement through second stories are arranged around a spiral stair that passes through a rotunda. The basement has mechanical spaces and an entrance to the MBTA subway's State station, while the first and second stories have exhibit rooms flanking the rotunda. The building also has an attic and additional rooms in the tower. The museum hosts Boston-related exhibits and reenactments.