Messiah Cathedral (Katedral Mesias) is an Indonesian megachurch of the predominantly Indonesian-Chinese Indonesian Reformed Evangelical Church (GRII) in Kemayoran, Jakarta. It was opened on 20 September 2008 by Stephen Tong the leader of the GRII church. It is part of the larger Reformed Millennium Center Indonesia (RMCI) development, which consists of the concert hall Aula Simfonia Jakarta, the art exhibition Sofilia Fine Arts Center, the Augustine library, the International Reformed Evangelical Seminary (IRES), and Calvin Christian School. The church has a capacity of 8,000, in two chambers, with 4,500 in the larger Messiah Hall. At the end of this year 2013, National Gospel Convention (KIN) is going to be conducted in this place.