PREVEZA, or PREVESA  , a seaport of Albania, European Turkey, in the vilayet of Iannina; at the entrance to the Gulf of Arta, an inlet of the Ionian Sea . Pop . (1905), 6500, of whom about four-fifths are Christian Albanians or Greeks, and one-fifth Moslems . The town is surrounded by dense olive groves, and most of its houses stand in their own gardens . The harbour is small, and closed to large vessels by a bar of sand; but it is a port of call for the Austrian Lloyd steamers, and annually accommodates about 1500 small vessels, the majority of which are engaged in the coasting trade . Preveza exports dairy produce, valonia, hides and wool, olives and olive oil . The yearly value of its trade varies from about £70,000 to £8o,000 . About 3 M. north are the ruins of Nicopolis (q.v.) .