Bulgaria is located in Southeastern Europe on the Balkan Peninsula, with Turkey and Greece to the south, Romania to the north, and Serbia and Macedonia to the west. The official language is Bulgarian, and the education system includes kindergarten, elementary school, high school, and university levels. Some notable landmarks include the Belogradchik Rocks formations, the Magura Cave which contains the largest inland lake, and the Rila Monastery situated in the Rila Mountains. Sofia is the capital and largest city, home to Sofia University and the Alexander Nevsky Cathedral. The Bulgarian rose is the national symbol.