Letoon was the sacred cult centre of Lycia. Its most important sanctuary is dedicated to three deities of Lycia - Leto and her twin children, Apollo and Artemis. Letoon was a shrine and not actually a city, though it did have a settlement surrounding it.

The sites of interest in Letoon include the remains of three temples, dedicated to Leto and her twins Artemis and Apollo as well as an agora, a nymphaeum and an amphitheatre.