Gonio Fortress

Gonio Fortress stands on a flat coastal plain near the mouth of the Chorokhi River, 15 kilometres south of Batumi and four kilometres from the Turkish border — a position that has made this stretch of coastline strategically important to every empire that has sought to control the eastern Black Sea. The fortress is modest in scale compared to the great Roman forts of Britain or Germany, but its setting on a low sandy promontory above the river estuary gives it a visual character quite different from the mountain-set fortresses of Georgia's interior, and the sound of the sea and the sight of the Anatolian coastline on clear days gives a geographical context that is unmistakably coastal.

The oldest written reference to the site comes from Pliny the Elder, who mentioned it in his Natural History in the 1st century CE, and Appian referenced the ancient name Apsarus in his account of the Mithridatic Wars in the 2nd century. Under Roman rule, Apsarus was a well-fortified city within the kingdom of Colchis, complete with a theatre and a hippodrome — the latter a large arena for chariot races that was an essential feature of Roman urban life. Procopius of Caesarea, writing in the 6th century, described the ruins of the public buildings as still visible in his time, and the Byzantine Emperor Justinian subsequently strengthened the fortifications against Persian threats, adding a citadel within the larger walls.

The site also features in Greek mythology: according to the legend that Pliny records, Gonio marks the burial place of Absyrtus, the brother of Medea, who was killed and dismembered by her on the coast of the Black Sea as they fled from her father. The myth connected Gonio to the wider world of Greek legend and made the fortress a place of pilgrimage for those interested in the classical tradition — a role it played alongside its purely military function for several centuries.

The medieval Georgian period saw further modifications to the fortress walls, and Gonio continued to function as a settlement through the later centuries under Ottoman rule before becoming part of the independent Georgian state in 1878. Today, the surviving Roman stonework — particularly the well-preserved eastern wall and the round tower at the southeastern corner — can be distinguished from the later Georgian and Ottoman additions by the different masonry techniques and the Roman brick bonding patterns used in the original construction.

Archaeological excavations at Gonio have been conducted intermittently since the early 20th century, revealing layers of Roman, Byzantine, and medieval Georgian occupation. Finds have included Roman glassware, coins, pottery, and evidence of metallurgical production, suggesting that Gonio was not merely a military garrison but a functioning urban centre with craft production and trade connections across the Black Sea and beyond. The archaeological collection is displayed in the Batumi Museum.

For visitors approaching from Batumi, the fortress appears first as a low dark mass against the pale coastal sky, its walls less dramatic than the cliffs of Uplistsikhe or the mountain silhouette of Gergeti but imposing in their own way — a reminder of the Roman Empire's reach and the long continuity of strategic importance that this particular stretch of coast has always possessed. The nearby Batumi Botanical Garden, a few kilometres north along the coast, makes a natural pairing with a visit to Gonio, combining natural and historical experiences on the same day.

The best-preserved Roman fortification on Georgia's Black Sea coast, with documented history dating from the 1st century CE.

The site shows Roman, Byzantine, and medieval Georgian architectural phases visible in the surviving walls and towers.

The combination of classical mythology (Absyrtus's tomb) and geopolitical history makes Gonio uniquely layered among Georgian sites.