Early morning flight to İzmir and drive to Pamukkale (Cotton Castle), a beautiful and spectacular natural site near Denizli, unique in the world. Thermal spring waters have carved this fantastic formation of stalactites. Thermal waters have been used since Roman times for their therapeutic powers. Situated on the plateau are both the thermal center with its motels, thermal pools and ruins of the ancient city of Hierapolis. Monument on this site includes the ancient thermal baths which have been restored and converted into an archaeological museum.