Around 3,800 couples participated in a mass wedding at the South Korean headquarters of the Unification Church, CheongShim Peace World Center, on Tuesday, AFP reports. The mass weddings have been a signature of the church since the early 1960s. Around 800 of the couples were 'matched' four days before Tuesday’s wedding, at an 'engagement ceremony' presided over by Hak Ja Han, the widow of the church’s founder, Sun Myung Moon, who died in 2012.