The Greek island of Kos lies in the Aegean See off the Turkish coast. Kos is one of the most popular Greek islands. Here, you can enjoy a terrific, sun-drenched beach holiday. But you can also visit the many monuments from antiquity, such as the Roman amphitheatre, the Temple of Hercules and the Asclepion. Enjoy delicious Greek cooking with fresh fish, and then have a drink on one of the many terraces.