The Dodecanese lie in the south-eastern Aegean, close to the coast of Turkey. The name means "twelve islands", but the group has more today. Rhodes has a medieval city fortified by the Knights of St John, a UNESCO World Heritage Site. Patmos is also a UNESCO site, for its monastery and old town. Kalymnos and Karpathos have routes for climbing and hiking, and Symi and Kastellorizo have castles.