With the Turkish name "İstanköy" island, with the arrival of the Turks began a development. Especially XVII. and XVIII. The number of Turks settled in this island in the 18th century has increased. In parallel, many works have been done. Evliya Çelebi states that there are 11 Muslim neighborhoods, 6 mosques, 4 mosques, 1 lodge and 9 children's schools. The pilgrimage of Güzelce Ali Pasha, who was the grand vizier in 1619, was built by Ahmed Pasha. A minaret mosque, Turkish bath, a fountain, a large pool and 20 shops were built by this family. The island of Kos, like Rhodes, is home to some of the graves of the Turkish elders. Hacı Osman Pasha, who died in 1745, Hakki Mehmet Pasha who died in 1811, Hekimtaşuzade Abdul Aziz Efendi who died in 1782/3 (1197) are some of them.