The Boston Celtics are an American professional basketball team based in Boston. The Celtics compete in the National Basketball Association (NBA) as a member of the league's Eastern Conference Atlantic Division. Founded in 1946 as one of the league's original eight teams, the Celtics play their home games at TD Garden, which they share with the National Hockey League (NHL)'s Boston Bruins. The Celtics are regarded as one of the most successful basketball teams in NBA history.