The Special Region of Yogyakarta (English: /ˌjoʊɡjəˈkɑːrtə/; Indonesian: Daerah Istimewa (D.I.) Yogyakarta) is a provincial-level autonomous region of Indonesia in southern Java. It has also been known as the Special Territory of Yogyakarta. It is bordered by the Indian Ocean to the south, as well as sharing all the land borders to the province of Central Java. Co-ruled by the Yogyakarta Sultanate and the Duchy of Pakualaman, the region is the only officially recognized diarchy within the government of Indonesia. The city of Yogyakarta is a popular tourist destination and cultural center of the region.The Yogyakarta Sultanate was established in 1755 and provided unwavering support for Indonesia's independence during the Indonesian National Revolution (1945–1949). As a first-level division in Indonesia, Yogyakarta is governed by Sultan Hamengkubuwono X as the governor and Prince Paku Alam as the vice governor. With a land area of just 3,185.8km2, it is the second-smallest province-level entity of Indonesia after Jakarta.