The most distinctive type of landscape is Piva Lake, 42 km long, with a volume of 800 million m3 of water, which flooded the old settlement of Pluzine. It was created by building a hydroelectric power plant, ie. by building a concrete arch dam near Mratinje, which is 220m high and is one of the highest dams of that type in the world.

The State Nature Reserve and the Protected Marine Area of Torre Guaceto are a unique ecosystem rich in biodiversity.