Cyzicus, one of the most important Hellenistic cities on the ancient Sea of Marmara, stands out with its strategic location on a peninsula. It gained renown particularly from the 6th to the 4th century BCE for its electrum coinage (Cyzicene staters) bearing the emblem of a tunny fish, which were widely used in Mediterranean trade. During the Roman Imperial period, the city became a center of culture and learning as a free city, hosting the colossal Temple of Hadrian.

History

The foundation of Cyzicus is traditionally attributed to Milesian colonists in the 8th century BCE. According to legend, the Argonauts, in search of the Golden Fleece, sojourned in these lands during their journey. The city came under Lydian and later Persian rule in the mid-6th century BCE, but maintained its independence for a period as a member of the Delian League. Emerging from Persian control in the 4th century BCE, Cyzicus fell under the influence of various kingdoms (especially the Kingdom of Pergamon) during the Hellenistic period, yet largely preserved its autonomy. During the Roman Imperial period, it experienced a significant rise, gaining the status of a free city (civitas libera) and becoming one of the region's largest centers of culture, art, and learning. During this era, it became particularly renowned for its colossal temple commissioned by Emperor Hadrian in the 2nd century CE. The city's prosperity largely ended with severe earthquakes in 443 CE and 1063 CE, disasters that reduced Cyzicus to ruins.

Geographic Location

Cyzicus was strategically founded on the Kapıdağ Peninsula, which extends into the Sea of Marmara, near the modern district of Erdek in Balıkesir province. Its location on a peninsula in antiquity provided the city with both a unique advantage in maritime trade and facilitated its defense. Over time, this peninsula merged with the mainland due to alluvial deposits, also strengthening the city's connection with the interior. Its position on the southern coast of the Sea of Marmara, along the maritime trade routes leading to the Straits, made Cyzicus one of the ancient world's important port cities. Being surrounded by fertile agricultural lands and marine resources with high fishing potential significantly contributed to the city's economic prosperity.

Significance in Antiquity

Cyzicus held great significance in the ancient world, both economically and culturally. Economically, its electrum coinage, known as 'Cyzicene staters,' minted particularly from the 6th to the 4th century BCE, was among the most widely used trade currencies in the Mediterranean basin. The city's emblem, the tunny fish, frequently appeared on these coins, indicating the city's rich fishing resources. Politically, the free city status it attained during the Roman Imperial period solidified the city's autonomy and regional power. From a religious perspective, the colossal temple built in honor of Emperor Hadrian in the 2nd century CE was considered one of the largest structures in the ancient world and underscored the city's position as a religious center. Furthermore, cults dedicated to deities such as Kore (Persephone) and Apollo also held an important place in city life. Cyzicus also gained renown as a center of learning and philosophy, becoming a place where many important thinkers and scholars were educated.

Coinage

Cyzicus was one of the most important mint cities of the ancient world, renowned particularly for its electrum coinage (an alloy of gold and silver) minted from the 6th to the 4th century BCE. These coins, known as 'Cyzicene staters,' were so widely used in Mediterranean trade that they served as the international currency of their era. While the obverse of the coins typically featured the city's emblem, the tunny fish, their reverse sides displayed a wide iconographic variety, including mythological figures, deities, animals, and various symbols. This diversity also reflects Cyzicus's artistic and cultural richness. In addition to electrum coins, the city also minted gold and silver coins in later periods. During the Roman Imperial period, it continued its minting activities, producing bronze coins featuring imperial portraits. Cyzicus's prolific coinage activity is concrete evidence of the extent of the city's economic power and commercial networks.

Cyzicus is an ancient mint represented in the NumisTR database by 1280 coin varieties. The recorded coins were struck in bronze, silver, billon and electrum. Authorities named on the coins include Aurelian, Theodosius I, Constantine I and Constantius Ii. You can browse the city's coins in the Mysia coins list.

Archaeological Remains

Due to the major earthquakes it experienced, Cyzicus has unfortunately suffered significant destruction in terms of monumental architectural remains that survive to the present day. Nevertheless, some traces indicating the ancient city's past splendor are still visible. The most striking remains are the foundations and colossal column fragments of the Temple of Hadrian, built in honor of Emperor Hadrian and once one of the largest temples in the world. These remains provide an idea of the structure's dimensions. Traces of other public structures of the city, such as the theater, amphitheater, agora, and stadium, also exist, but most have survived only at foundation level or as scattered piles of stones. Sections of the ancient city walls can also be seen in places. Excavations have revealed that the city spread over a large area and possessed a planned urban structure.

Today

The remains of the ancient city of Cyzicus are located today within the borders of the Erdek district, part of Balıkesir province, in close proximity to the modern settlement of Erdek. The archaeological site, situated on the Kapıdağ Peninsula, is easily accessible by road. Visitors can wander among the widespread remains of the ancient city, experiencing the atmosphere of this once magnificent center of trade and culture. The colossal dimensions of the Temple of Hadrian, in particular, leave a profound impression on visitors. The region is an important stop for history and archaeology enthusiasts and represents a significant part of the rich ancient heritage of the Marmara Region.