
Istanbulites often refer to the Princes' Islands as "Adalar" (Islands). Located 20 km southeast of the city in the Sea of Marmara, these islands are a popular destination for a day's escape. However, they host a huge crowd between May and October, and can receive up to 50,000 visitors a day on weekends. These islands are ;
Five of these are inhabited, and the largest islands, Büyükada and Heybeliada, attract the most visitors.