The city of Makarska grew around a natural harbor protected by a picturesque peninsula of Sveti Petar (St. Peter) and the cape Osejava. It is the only harbor of this kind between the mouth of the Cetina and Neretva rivers. In the past it provided protection and safe harbor during stormy weather to sailors, pirates and merchants, and nowadays it does the same for yachts, sailing boats and tourist ships. This contributed to its development into a trading port, especially during the Ottoman and Venetian occupation. Today, there is a ferry line which runs a few times a day from Makarska to Sumartin on the island Brač. During the summer months the harbor fills up with yachts and tourist ships, while young people crowd the main Kačić square enjoying entertainment and cultural performances. As the night goes on, Makarska becomes livelier and livelier, and its cafes, restaurants and discotheques fill up.