 The Church of Christ Pantocrator ( Bulgarian : <unk> „ <unk> <unk> “ , <unk> „ <unk> <unk> “ or <unk> „ <unk> <unk> “ , <unk> „ <unk> <unk> “ , Byzantine Greek : <unk> <unk> <unk> ) is a medieval Eastern Orthodox church in the eastern Bulgarian town of Nesebar ( medieval <unk> ) , on the Black Sea coast of <unk> Province . Part of the Ancient Nesebar UNESCO World Heritage Site , the Church of Christ Pantocrator was constructed in the 13th – 14th century and is best known for its lavish exterior decoration . The church , today an art gallery , survives largely intact and is among Bulgaria 's best preserved churches of the Middle Ages . 
