Rijeka, also known as Fiume, represents the main port city of Croatia. It has been shaped by various influences over the centuries, including Austro-Hungarian and Italian ones. View from Trsatski kaštel in SW direction to the valley of the Rječina river, dominated by old industries (foreground), and to the central districts of Školjić-Stari grad and Luka (right centre). The peninsula of Istria is shown in the background of the photo, on the other side of the Kvarner Gulf.