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 neighborhood of Boston. The building houses the Massachusetts General Court and the offices of the Governor of Massachusetts. The building, designed by architect Charles Bulfinch, was completed in January 1798 at a cost of $133,333, 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.