The Hanging Church is also referred to as the Suspended Church or Al-Moallaqa. Built on top of the Roman fortress gatehouse called Babylon, the nave of the Hanging Church is suspended over the passageway. Located just south of the Coptic Museum in Cairo, the Hanging Church boasts 13 magnificent pillars in its interior, representing Jesus and his 12 apostles. The Hanging Church has a wooden roof in the shape of Noah’s ark. A total of 110 icons are kept in the Hanging Church, the oldest of which is the Coptic Mona Lisa dating back to the eighth century AD and representing Virgin Mary, Jesus Christ and John the Baptist. Coptics who form the majority of Egyptian Christians are followers of the Coptic Orthodox Church and considered to be part of the descendants of Ancient Egyptians and one of the first peoples to convert to Christianity. The Coptic Church traces its spiritual history back to St Mark, the traditional author of the Gospel of Mark, and considers him to be the founding father of the Coptic Orthodox Church.