The Second Church (1649–1970) in Boston, Massachusetts, was first a Congregational church, and then beginning in 1802, a Unitarian church. The congregation occupied a number of successive locations around town, including North Square, Hanover Street, Copley Square, and the Fenway. Ministers included Michael Powell, Increase Mather, Cotton Mather, and Ralph Waldo Emerson. In 1970 it merged with Boston's First Church.