Monastery complex on island “St. Ivan” X – XVII century,town of Sozopol is a unique monument of the Christian architecture, situated in an ecologically preserved environment with high level of conservation and opportunities for socialization. The complex includes the churches – “St. Mother of God Kaleosa” – a three-room basilica X – XVII century, “St. Ivan Precursor ” XII – XIV century, a kitchenette, an abbacy and sixteen cells from the north and west gables of the monastery. At some of parts of the complex the architectural remains are preserved up to 5 meters in height.