Situated in the ancient region of Paphlagonia on the Black Sea coast, Abonouteichos/Ionopolis was an important port city, particularly known in the 2nd century CE for the false prophet Alexander and the cult of Glykon he established. The city's name gained renown due to the influence of this cult and was later changed to Ionopolis. Today, it lies beneath the modern district of İnebolu.

History

While definitive information regarding the foundation of Abonouteichos is limited, it is believed to have emerged as a settlement towards the end of the 1st millennium BCE or in the mid-1st millennium BCE, owing to its strategic location on the Black Sea coast. Initially part of the Paphlagonian region, the city remained under Persian rule, subsequently falling under the control of various kingdoms (such as the Kingdom of Pontus) during the Hellenistic Period. With the expansion of the Roman Empire into Anatolia, Abonouteichos was also incorporated into the Roman provincial system.

The city's most renowned period began in the 2nd century CE with the emergence of Alexander and his establishment of the serpent-god Glykon cult, as detailed in Lucian's work "Alexander, or the False Prophet." Alexander transformed Abonouteichos into the center of this new and popular cult, generating significant religious and economic activity in the city. The cult spread across a wide geographical area of the Roman Empire, bringing considerable prestige to the city. During this period, Abonouteichos virtually became a pilgrimage center. In later periods, likely to distance itself from Alexander's negative reputation, the city's name was changed to Ionopolis. Ionopolis continued its existence during the Byzantine period, maintaining its strategic position.

Geographic Location

Abonouteichos/Ionopolis is located in the northern part of the ancient region of Paphlagonia, on the Black Sea coast, within the borders of the modern İnebolu district of Kastamonu province (Coordinates: 41.974026, 33.766047). The city stands out for possessing a natural harbor. This harbor enabled it to become a crucial node in the Black Sea trade network during antiquity. The sea routes offered by the Black Sea to the north facilitated the city's connections with Pontus, Bithynia, and other Black Sea coastal settlements. To the south, there are valleys and passes that provided connections with Paphlagonia's mountainous interior regions. This geographical location transformed Abonouteichos into a gateway for both maritime trade and the export of goods from the interior. Important neighboring centers included Sinope (Sinop) to the east and Amastris (Amasra) to the west.

Significance in Antiquity

Abonouteichos attracted attention in antiquity due to both its strategic geographical location and its religious significance. As a port city, it played an active role in Black Sea trade, particularly situated at the crossroads of maritime trade routes between Pontus and Bithynia. This economic vitality contributed to the city's prosperity. However, the city's most prominent significance in antiquity undoubtedly stemmed from the Glykon cult established by Alexander in the 2nd century CE.

Alexander introduced the serpent-god Glykon as a prophetic deity and made Abonouteichos the center of this cult. The cult spread across a wide geographical area of the Roman Empire, gaining a broad following from imperial elites to ordinary citizens. During this period, Abonouteichos virtually became a pilgrimage center, hosting visitors from all corners of the empire who came to seek prophecies and worship the god Glykon. This situation allowed the city to gain great prestige, both religiously and economically. Although the cult's influence diminished after Alexander's death, the city's name remained synonymous with this period.

Coinage

No coins from this settlement are recorded in the NumisTR database.

Archaeological Remains

The archaeological remains of Abonouteichos/Ionopolis are not visible on the surface today, as they lie beneath the modern city of İnebolu. The modern settlement built over the city largely obstructs access to the ancient strata. Nevertheless, some ancient finds have occasionally been encountered during modern construction activities or surface surveys. These finds typically consist of fragmentary remains such as pottery sherds, architectural elements, inscriptions, or tombstones.

As understood from ancient sources and existing archaeological data, the city possessed a harbor, temples (especially one dedicated to the Glykon cult), public spaces such as an agora, and residential areas. However, detailed information regarding the layout of these structures or their prominent surviving remains is limited due to the absence of comprehensive and systematic archaeological excavations. Future archaeological work holds the potential to provide more information about the city's ancient topography and architecture.

Today

Abonouteichos/Ionopolis is located today beneath the district of İnebolu, which is part of Kastamonu province in Turkey's Black Sea Region. İnebolu continues to serve as an important port and trade center on the Black Sea coast. The town is connected by road to the provincial center of Kastamonu and other neighboring provinces and districts. From a touristic perspective, İnebolu offers visitors diverse experiences with its historical fabric, natural beauty, and its significance during the Turkish War of Independence. The remains of the ancient city largely remain hidden beneath the modern settlement.