The Monastery of Panagia Ekatontapiliani in Paros , Cyclades: The church of Panagia Ekatontapiliani is located few metres from the port of Parikia, the capital of Paros. This is one of the best-preserved Paleo-Christian monuments in Greece. According to the legend, the original church was constructed by Saint Constantine, first Emperor of Constantinople, after the offering of his mother, Saint Helene. Source: www.greeka.com