The island settlement that rose from Roman ruins to become Slovenia's maritime gateway

Countries & Cities · Published 12 October 2026 Swipe more like this →

In short: Once a small island known as Goat Island, Koper has evolved through centuries of shifting empires. From Roman settlements to Venetian rule and Yugoslav administration, this Mediterranean hub has survived plagues and political upheavals to become the vital engine of Slovenia's modern maritime economy.

The origins of Koper are rooted in antiquity, beginning as a settlement on an island in the northern Adriatic. Known to Roman settlers as Insula Caprea or Capro, the name likely refers to the goats that were raised on the island before permanent settlement was established. This site eventually developed into the city of Aegida, a name thought to echo the aegis, or shield, of the Greek goddess Athena.

The city's history is a tapestry of shifting sovereignty. Following the Lombard invasion in 568, the town was renamed Justinopolis in honor of Byzantine Emperor Justinian II. The settlement subsequently came under Frankish and Lombard control, with a short Avar occupation during the 700s. By 1278, Koper joined the Republic of Venice, eventually serving as its capital in Istria under the name Caput Histriae—the root of its modern Italian name, Capodistria.

Economic and demographic shifts have defined its modern era. During the 16th century, repeated plague epidemics caused the population to drop from a high of 10,000 to 12,000 inhabitants. The city's strategic importance fluctuated significantly; for instance, it lost its trade monopoly when Trieste became a free port in 1719. Following World War II, Koper was part of the Free Territory of Trieste under Yugoslav control, and it was only after Slovenian independence in 1991 that it became the nation's sole commercial port.

Today, Koper is a bilingual city where Slovene is the dominant language, though Italian remains an official language. It serves as a critical transit route for goods moving from Asia to central Europe, with the Port of Koper functioning as the country's only container port.

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