About Kocaeli

Kocaeli is one of Türkiye’s provinces, bringing together a distinctive natural setting, historic heritage and local culture in in eastern Marmara, around the Gulf of İzmit.

Kocaeli geography and natural environment

Kocaeli lies in eastern Marmara, around the Gulf of İzmit. the gulf coast, Samanlı Mountains, Kartepe and Sapanca basin bring industry, settlements and natural areas together This setting influences settlement patterns, farming and livestock activities, and transport routes. Districts around the provincial centre have different local characteristics according to elevation and access to water; understanding the province therefore involves looking at its coastal, valley, plain or highland environments together.

Kocaeli history, culture and notable features

ancient Nicomedia was an important eastern centre of the Roman Empire; İzmit developed through Ottoman shipbuilding and transport networks. Eskihisar, Kasr-ı Hümayun and Ormanya offer varied visitor experiences; pişmaniye is associated with the city, as is İzmit simit. When visiting these historic and cultural places, it is important to follow conservation rules, avoid leaving a trace in sensitive natural areas and respect local communities. For more detailed history, travel and cultural information, consult the official Türkiye Culture Portal.