Examples of some animals found in the national park: While other nature protection areas are located far away from any interference by man, the Plitvice Lakes have permanently been exposed to human influence in the course of history. The Plitvice Lakes do not represent an abandoned or lonely nature reserve. They are located along an important transport route and have always been a meeting place of occidental and oriental cultural influences. Humans have inhabited the Plitvice Lakes area for thousands of years. It has been settled in turn by Illyrians, Japods, Celts, Romans, Avars, Slavs, Croats and Turks. Under Julius Caesar the region was incorporated as the province of Illyricum into the Roman Empire. The areas of the neighborly tribes of the Pannonians, the Liburnians and Dalmatians were united into the province of Dalmatia. Successively, the Ostrogoths took over the rule. After the Battle of Nedao in 454, the Ostrogoths were rewarded with a federation agreement with the Roman Empire. During the 6th century, Avars settled in this region, which were accompanied by the Croats. The Croats eventually defied Avar control and settled permanently in this region. In medieval times, frequent attacks by Mongols posed a permanent threat to the settled population. The lakes formed part of the medieval kingdom of Croatia which in 1102 elected to be in personal union with Hungary. Croat rule and particularly the rule of the noble families Zrinski and Frankopan led to economic recovery in the wider area. On the remnants of an ancient settlement of the Japods and Romans a monastery was built at the lakes. Presumably, this monastery belonged to the Order of Saint Paul the First Hermit (Croatian "pavlinci") or the Knights Templars. Today, only ancient wall remnants of this building (Croatian "gradina") exist. The foundation was made of travertine rock. In 1493, not far away from the Plitvice Lakes a decisive battle in Croatian history between the Austrian and Ottoman Empire took place. During the Battle of Krbava Field almost the entire Croatian nobility was killed. The Ottomans advanced far into Western lands up to Croatia and Hungary. In 1527, the Croatian Parliament elected the Habsburg monarch Ferdinand, Archduke of Austria as the new king of Croatia in the hope of resources to ward of the Ottoman advance. In 1528, the area fell to the Ottomans and was retaken by the Habsburg Empire 150 years later.