Agia Mariani is an uninhabited islet between Schiza and Sapientza of the Oinousses cluster. This rocky islet took its name from the small church built on top which is dedicated to Agia Mariani. The islet was inhabited for more than 1,000 years; the ruins of a Byzantine church and the potsherds, dated from the Early Byzantine era till the Middle-Byzantine era, bear witness to the fact. Today a new church of Agia Mariani boasts on the island, built on top of the old one, and it celebrates on July 17. This islet and the Akritas cape are included in the Natura 2000 Network.