Brijuni Islands are situated near the city of Pula and represent the only National Park in Istria County. They were declared as National Park in 1983. With its 14 islands, 743,30 ha of area and water surface of 2652 ha (total area of 3395,00 ha), they represent the most indented and interesting islands in Istria. By arriving at Brijuni Islands and walking on its gentle paths, one can immediately notice why they deserved almost mythical status with its pleasant and mild climate. There is an important archaeological site on these islands in the northern Adriatic, and there is a rich cultural ancestry of the islands from the earliest to modern times.
https://www.pulacroatia.net/item/brijuni-islands-national-park/