Kocaeli

Built around the sheltered Gulf of İzmit and the Istanbul–Ankara transport corridor, Kocaeli grew into one of Turkey’s leading industrial provinces. Its centre, İzmit, stands at the eastern end of the Sea of Marmara, while the province also reaches the Black Sea coast across the Kocaeli Peninsula. Ancient Nicomedia, now İzmit, served as an imperial capital during the reign of Diocletian. The Gulf of İzmit remains central to local life, linking port activity, shipyards and urban districts, with the Osmangazi Bridge spanning its western waters. Forested slopes of the Samanlı Mountains provide a marked contrast to the heavily developed shoreline. Discover other points of interest through webcams located across Kocaeli.

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