One of Croatia’s best-kept secrets the island of Mljet is considered the most beautiful and lush island in the Adriatic. Mljet is brimming with outstanding underwater wildlife and secluded sandy beaches. Over two-thirds of the island is covered by forest filled with olive trees and grapevines. The majority of the island is a national park which has the scenic saltwater lakes Veliko Jezero and Malo Jezero (Big Lake and Small Lake). Sail to the peaceful bay of Polače, then visit the quaint little fishing village of Pomena, where you can swim in the legendary Odysseus’ Cave nearby.