Mljet National Park covers the entire north-west part of Mljet Island. Mljet National Park is large area that borders two salt water lakes – Veliko i Malo jezero (Large and Small lake) The Lakes stretch for about 4 kilometres. Right in the middle of the Large Lake there is a small island / islet Melita (Sveta Marija) with large building of former Benedictine monastery, erected there in 12th century. The monastery’s building is now café/restaurant. The small island is connected by boats that sail there from both sides of the Lake. The seaside villages of Pomena, Polace, Sobra and Saplunara attract the most visitors. They come for the hiking, biking, swimming, stunning scenery and peaceful atmosphere that reign everywhere. The lushly forested island is so seductive, it's said that Odysseus came and stayed for seven years. You can even visit the Odysseus cave. It's really a large and beautiful grotto where the peripatetic traveller allegedly met the nymph, Calypso, who nursed him back to health on the island. The waters around Mljet are a treasure trove for scuba divers. A recent excavation around a 10th-century shipwreck revealed several hundred artifacts including bottles, amphorae and decorated glass.