Princes' Islands are known to many Arabs Princess Island, is a group of islands in the Sea of Marmara belonging to Istanbul Governorate, some of these islands are rather large and others are very small, but in general they are small islands with a total area of 15.85 square kilometers. The largest of these islands is Büyükütütü, of which the commercial center is a small part, while most of them are divided between natural forests.