The Chora Mosque is world famous for its well-preserved mosaics and frescoes, and provides important and beautiful examples of Eastern Roman painting in its late period. The mosque was originally built as a Greek Orthodox church during the reign of Emperor Justinian I in the fifth century AD. The reforms and additions changed the original building plan to a large extent, and the church was turned into a mosque in the sixteenth century during the Ottoman era, and then became a museum in the year 1945, but returned as a mosque in 2020. Today, the mosque's building dates back to the 14th century, and visitors will find impressive arches, many domes, and majestic drawings on the ceilings and walls.