High up in the hills that surround Fethiye, Tlos is another Lycian city ruin. Crowning the rounded acropolis hill are the remnants of an Ottoman fortress. 

The Lycians weren't the only ones to appreciate a good mountain stronghold position, and this fortress was used by various local brigands during Ottoman rule.

On the east side of the acropolis, the remains of the Lycian and Roman city walls can still be seen