Mamula Island, formerly known as Lastavica, is a historic circular island roughly 200 meters in diameter. Dominated by a striking 19th-century fortress built by Austro-Hungarian General Lazar Mamula, the site was once a key defensive stronghold, designed to prevent enemy access to the bay. From the boat, you'll enjoy scenic views of this impressive stone structure surrounded by turquoise waters, and learn about its fascinating military past and eerie transformation into a modern landmark.