The Acropolis is situated on the highest part of the ancient city, sloping gently toward the east and bounded to the west by cliffs, upon which watch towers forming the city's perimeter once stood. Mostly dating from the hellenistic period, the monuments were built on stepped terraces, with substantial retaining walls.
Odeon
This small marble odeon could hold approximately 800 spectators. Situated northwest of the Stadium, it has been heavily reconstructed, as only the orchestra and a few front row seats are original
Stadium
Located on the southeast side of the hill, the 210-metre long, north-south oriented Stadium was initially restored by the Italians. Dating to the 3rd century BC, its surviving features include the sphendone (rounded end with turning post), proedries (officials' seats), and some of the spectator seating. The starting apparatus used in the athletic events has also been preserved. Athletic events of the Haleion Games, honoring Helios, were held here.
Temple of Pythian Apollo
It was built in the second century BC in Doric style and was situated in an enclosed precinct. Presenting a distinct profile, in the ancient time it was a landmark for the ships sailing to Rhodes, and even today the reerected columns are visible from the harbor.