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 Rječina river in the foreground and the central districts of Školjić-Stari grad and Luka in the middle of the image. The peninsula of Istria with the S part of the Učka mountains is shown in the background, on the opposite side of the Kvarner Gulf.