Mount Dikaios also known as Mount Oromedon in ancient times, is the highest mountain of Kos and culminates at 846 meters. On the top of Mount Dikaios the church of Christos really stands out. There is also a large cross and a shelter that is kept in very good condition and can house quite a few people for the night. To reach the top you will need to do a one hour hike from the village of Zia (check the link for more details).