Apollonia ad Rhyndacum is an important Hellenistic and Roman settlement strategically located in the Propontis (Marmara) region of ancient Anatolia, on the banks of the Rhyndacus River (modern Mustafakemalpaşa Çayı) and Lake Apollonia (modern Lake Ulubat). It was founded as a Greek colony that prospered through maritime trade and agriculture, thanks to the region's critical role on the trade routes between the Mediterranean and Black Seas. Its remains are located today within the Gölyazı quarter, situated in the province of Bursa.

History

The foundation of Apollonia ad Rhyndacum dates back to the period of Greek colonization movements in the 7th or 6th centuries BCE. The city's name derives from the Greek god Apollo, indicating either the reverence of its founders for him or the city's strong connection to the cult of Apollo. Like most cities in the Propontis region, Apollonia was likely a trading colony founded by major Greek city-states such as Miletus or Megara. During the Hellenistic Period, particularly with the rise of the Kingdom of Pergamon, it played an active role in the political and cultural life of the region. With the bequest of the Kingdom of Pergamon to Rome in 133 BCE, Apollonia ad Rhyndacum became part of the Roman province of Bithynia et Pontus. During the Roman period, the city maintained its prosperity, especially due to the stability brought by the Pax Romana and the development of trade. The city retained its importance during the Byzantine era and continued its existence as a regional center throughout the Middle Ages.

Geographic Location

Apollonia ad Rhyndacum is situated on the southern shores of the ancient Propontis region, in modern Turkey's Marmara Region. The city's strategic location is defined by its proximity to the mouth of the Rhyndacus River (Mustafakemalpaşa Çayı) and its establishment on a peninsula on the shore of Lake Apollonia (Ulubat Gölü). This position allowed it to connect with inland regions via the lake and river, as well as to control maritime trade routes between the Black Sea and the Mediterranean via the Propontis. Surrounded by fertile agricultural lands, the city was also located in a region rich in fisheries. Important ancient cities in its vicinity included centers such as Kyzikos, Prusa ad Olympum, and Nikaia (İznik), integrating Apollonia into a regional network of interaction.

Significance in Antiquity

The significance of Apollonia ad Rhyndacum in antiquity largely stemmed from its geographical location. Besides cultivating agricultural products in the fertile lands of the Propontis, the city had the potential for trade with inland regions thanks to the Rhyndacus River and Lake Apollonia. Products such as grain, wine, and olive oil, in particular, contributed to the city's economic prosperity. Maritime trade was one of the city's main sources of income; it served as an important port and stopover for merchant ships traveling between the Mediterranean and the Black Sea. Politically, as a Greek polis, it sought to maintain its independence in internal affairs, but came under the influence of powerful kingdoms (especially Pergamon) during the Hellenistic Period, and was integrated into the provincial system during the Roman Empire. From a religious perspective, in addition to the cult of Apollo from whom it took its name, the existence of syncretic cults with local Anatolian goddesses (e.g., Cybele) in the region is probable.

Coinage

Apollonia ad Rhyndacum is an ancient mint represented in the NumisTR database by 96 coin varieties. The recorded coins were struck in bronze. You can browse the city's coins in the Mysia coins list.

Archaeological Remains

Today, the ancient remains of Apollonia ad Rhyndacum can be seen within and around the modern settlement of Gölyazı. Significant sections of the city's ancient walls are still standing and can be traced, particularly at the entrance to the peninsula and along the coastline. A remnant of a theater, believed to date from the Roman period, is an indicator of the city's cultural and social life. Furthermore, foundation traces of the Agora or other public buildings have been identified, sometimes intertwined with modern structures. The remains of a Roman bridge, built over the Rhyndacus River in antiquity and located in the area now known as "Ağlayan Çınar" (Weeping Plane Tree), highlight the city's engineering capabilities and its importance on trade routes. Sarcophagi and inscriptions unearthed from necropolis areas also shed light on the city's history.

Today

The ancient site of Apollonia ad Rhyndacum is located today in the Gölyazı quarter, within the Nilüfer district of Bursa province. Gölyazı, built on a peninsula on the shore of Lake Ulubat, is an important tourist attraction with its natural beauty and historical fabric. Easily accessible by road from the city center, Gölyazı offers visitors the opportunity to experience ancient remains intertwined with modern life. Particularly the ancient walls, theater remains, and the Roman bridge are among the points of interest for archaeology and history enthusiasts visiting the region.