Mljet is an island located in the Adriatic Sea, part of Croatia. It is known for its stunning natural beauty, featuring lush forests, crystal-clear waters, and two saltwater lakes, Veliko Jezero and Malo Jezero. The island is a popular destination for outdoor activities such as hiking, swimming, and cycling. Mljet is also home to the Mljet National Park, which protects its unique ecosystems and diverse wildlife. The island has a rich history, with ancient ruins and a 12th-century Benedictine monastery situated on St. Mary Island, located in the middle of Veliko Jezero.