These two churches were both listed as UNESCO World Heritage Sites in 2015. Located in the historic centre of Palermo just around the corner from my apartment, they were built in the mid-1100s when the Normans ruled Sicily and represent the Arab-Norman style of architecture unique to the island. UNESCO says: they are an example of a social-cultural syncretism between Western, Islamic and Byzantine cultures on the island which gave rise to new concepts of space, structure and decoration. They also bear testimony to the fruitful coexistence of people of different origins and religions (Muslim, Byzantine, Latin, Jewish, Lombard and French). The small Catholic church with the red domes, the Church of San Cataldo, is sparse and simple inside as its founder was assassinated before the interior could be decorated. The other, an Italo-Albanian church known as La Martorana, has an interior covered in glittering Norman-Byzantine mosaics. It serves the descendants of Albanians who fled to Sicily from invading Turks in the 1500s, and who’ve maintained their language, customs and Eastern Orthodox rite religion through the centuries.