It is possible to see the ruins at Physkos, an important harbour city of the ancient Caria region, on the Asar hill north of Marmaris. The old city walls dating back to the Hellenistic period are still fairly intact.
The ruins at Loryma, once part of the foundations of Rhodes, was founded originally in the region known as Oplosica (artillery smith), the waterside thicket on the southwest of the Bozburun peninsula 40km from Marmaris. The most impressive structure in the settlement area is the well-preserved reinforcement at the entrance of the bay at Burunbaşı. Nine rectangular towers, made from smooth rock-cut masonry, are built at the edge of Rhodes (Rodos) island. Today, only the balcony tower at the northern end can still be seen.
The ancient ruins of Amos are accessible from the Asarcık hill, northwest of Kumlubük bay. Amos dates back to the Hellenistic period, and is composed of a hillside amphitheatre, a temple and statue pedestals. Surrounded by ramparts dating back to the same time, this amphitheatre is in good condition, with its seating area, side walls and stage with three chambers.
The ancient ruins of Cedrae in the island of Saray, date back to the Hellenistic Roman era. What is known as the City Islands is comprised of Orta Island and Küçük Island. The remains of the ramparts can be easily seen from the distance.The island took its name from the rumour that Cleopatra swam with the locals in a small bay at the northwest of the island. The remains of buildings surrounded by ramparts on the east of Saray island date back from the Roman and Hellenistic period, and the small amphitheatre is in the best condition. There is an Agora on the west of Saray with inscriptions suggesting that athletics festivals devoted to Apollo were organised in the region. There are Necropolis ruins at Kucuk Island, as well as column reliefs.
The rampart ruins dating back to the Hellenistic era lie in Hydas, 35km from Marmaris. There are several tombs around a watchtower, 3 km from Hydas. The ancient region of Hydas was founded in the Selimiye Bay (Kamışlı Bay) north of the Bozburun peninsula. The ruins of Erine is 3km from the Hisarönü village, 20km southwest of Marmaris, and date back to the Hellenistic and Roman period.
Near the village of Hisarlik are the ancient ruins of Castabus (Pazarlık), a holy site which can be reached from Mount Eren with an hour's climb from Hisarönü plains. The temple is on a purpose-built platform dating back to 4th century BC. Apart from the Temple, only the ruined amphitheatre in the south can be defined.
Near the village of Söğüt, 45 km of Marmaris, Saranda still has the characteristics of being a continuous settlement during the Hellenistic, Roman and Byzantium periods, the latter of which clearly has remains today.
What remains of the ancient city of Bybassios can be seen in the village of Orhaniye, on the Erine road towards Bozburun, southwest of Marmaris. The ruins of the ramparts are found inside the forest.
Euthenna The reinforced ramparts surrounding the settlement area, in the west part of the Cedrai-Marmaris line, are in very good condition. There is also the extension of an ancient wharf.