- Temples - Remains of three temples, each dedicated to one of the three deities of Letoon are located side by side in the centre of the site. All three temples were built around older temples, probably dating back to Classical times. The temples of Artemis and Apollo were burnt down to slaked lime, however, the temple of Leto was only destroyed in the end of Antiquity and so eighty per cent of the temple blocks have been preserved.
- The Temple of Leto - is the largest and best-preserved temple, likely dating back to the 5th century BC. The temple was built of very fine limestone, the clear colour of which created the illusion of marble. An ionic portico surrounded the cult room (cella), which was decorated with an elegant engaged Corinthian colonnade. Because of its dimensions and the quality of its sculptured decoration, this temple is one of the most exceptional examples of Greek architecture in Turkey and one of the best-preserved Greek temples in the world.
- Temple of Apollo - To the east of the Temple of Leto dates back to the 4th century BC. This temple was Doric, unlike the other two temples, both of which were Ionic. A gorgeous floor mosaic depicting his symbols - bow and arrow, and lyre are seen here.
- The Temple of Artemis – Lies between the other temples, also dating back to the 4th century BC. It is smaller with excellent masonry.
- To the southwest of the temples is a nymphaeum connected to a sacred spring. It was perhaps used in a religious immersion ceremony and was built during the Hellenistic period with the Roman addition of a semi-circular pool.
- Remains of a Byzantine church with a nearby mosaic fragment. The church is believed to have been constructed in the 6th century AD and to have been destroyed around the mid-7th century. The nave and aisles were decorated with floor mosaics depicting geometric designs and animal figures (these can't be viewed - they are now either covered or have been removed). It is thought that there was a monastic community associated with the church and, due to the large number of drinking vessels found during excavation, and therefore dubbed its members "the Drunken Monks".
- Letoon's theatre (said to be one of the most beautiful of Hellenistic times) has vaulted passages leading to entrances on either side and is in a very good state of preservation. It was constructed in the 2nd century BC and was used for religious performances. The central part of the auditorium was carved from natural bedrock and the aisles were made from ashlars. The theatre was situated at the end of the road from Xanthos, which passed through a Lycian cemetery. The entrance on the south side has an interesting carving of a row of sixteen masks.
- Tombs of the south side of the amphitheatre, including this sarcophagus with a relief of a reclining figure and decorated with lion heads.
This poem was found on a tablet in Xanthos and has been translated by Azra Erhat
We made our houses graves
And our graves are homes to us
Our houses burned down
And our graves were looted
We climbed to the summits
We went deep into the earth
We were drenched in water
They came and got us
They burned and destroyed us
They plundered us
For the sake of our mothers,
And for the sake of our dead,
In the name of our honour,
And our freedom,
We, the people of this land,
Who sought mass suicide
We left a fire behind us,
Never to die out...