A chapel is a religious place of fellowship, prayer and worship that is attached to a larger, often nonreligious institution or that is considered an extension of a primary religious institution. It may be part of a larger structure or complex, such as a college, hospital, palace, prison, funeral home, church, synagogue or mosque, located on board a military or commercial ship, or it may be an entirely free-standing building, sometimes with its own grounds. Many military installations have chapels for the use of military personnel, normally under the leadership of a military chaplain.