The Prince Islands are a cluster of 9 islands in the Marmara Sea. The islands, which were the place of princes and empresses sent into exile in the past, have become very popular in recent years and have become a voluntary escape point for those who are tired of the stress and chaos of the city. The reason why these islands are called "Prince Islands" is that they were a place of punishment for royal families during the Byzantine Period. Büyükada, Heybeli Island, Burgaz Island and Kınalı Island are the most popular of this island group.