The Republic of Croatia has an official language of Croatian and uses the Latin script. Its capital and largest city is Zagreb, and it has a parliamentary democracy political system led by President Ivo Josipović. Croatia has high biodiversity with 8 national parks that protect areas like the Kornati Islands, Plitvice Lakes, Krka River, and Northern Velebit mountain range. The culture is reflected in traditions like the Sinjska alka jousting tournament and Moreška sword dances that are recognized on UNESCO's intangible cultural heritage lists.