Romania's largest lake, a lagoon of about 415 km² south of the Danube Delta, with Lipovan fishing villages on its shores, protected islands and the ruins of Enisala and Argamum above the water.
The freshwater lake behind Mamaia, 7.5 km long, with water sports bases on the resort side and little Ovidiu Island, tied to the legend of the Roman poet, off the town of Ovidiu.
Romania's largest salt lake, a former sea bay next to Eforie: cold mud baths on the Techirghiol shore in summer, flocks of rare birds on water that does not freeze in winter.