Letoon was the sacred cult center of Lycia, its most important sanctuary, and was dedicated to the three national deities of Lycia-Leto and her twin children Apollo and Artemis. Letoon is one of the most remarkable archaeological site in Turkey. For this reason,it has been registered in the UNESCO World Heritage Sites list. Letoon has been under excavation since the 1950’s and since 1962 by the French Archaelogical Mission, in conjunction with the excavations being carried out at Xanthos. Excavation goes on today-the team has done some excellent work and in recent years has begun to restore the Temple of Leto.