Massachusetts State House

Massachusetts Statehouse
U.S. National Register of Historic Places
U.S. National Historic Landmark
U.S. Historic district Contributing property
The Massachusetts State House
Location	Boston, Massachusetts
Coordinates	42°21′29.4″N 71°3′49.3″W / 42.358167°N 71.063694°W / 42.358167; -71.063694Coordinates: 42°21′29.4″N 71°3′49.3″W / 42.358167°N 71.063694°W / 42.358167; -71.063694
Built	1795-1798
Architect	Charles Bulfinch, Charles Brigham (1889-1895), Sturgis, Bryant, Chapman & Andrews (1914-1917)
Architectural style	Federal
Part of	Beacon Hill Historic District (#66000130)
NRHP Reference #	66000771
Significant dates
Added to NRHP	October 15, 1966
Designated NHL	December 19, 1960
Designated CP	October 15, 1966

The Massachusetts State House, also known as the Massachusetts Statehouse or the New State House, is the state capitol and seat of government for the Commonwealth of Massachusetts, located in the Beacon Hill/Downtown neighborhood of Boston. The building houses the Massachusetts General Court (state legislature) and the offices of the Governor of Massachusetts. The building, designed by noted architect Charles Bulfinch, was completed in 1798, and has repeatedly been enlarged since. It is considered a masterpiece of Federal architecture and among Bulfinch's finest works, and was designated a National Historic Landmark for its architectural significance.

The building is situated on 6.7 acres (27,000 m²) of land on top of Beacon Hill in Boston, opposite the Boston Common on Beacon Street. It was built on land once owned by John Hancock, Massachusetts's first elected governor.

Before the current State House was completed in 1798, Massachusetts's government house was the Old State House on Court Street. For the building's design, architect Charles Bulfinch made use of two existing buildings in London: William Chambers's Somerset House, and James Wyatt's Pantheon.