Hungary is a landlocked country in the southeastern region of Central Europe, bordering the Balkans. Situated in the Pannonian Basin, it has a land area of 93,030 square km, measuring about 250 km from north to south and 524 km from east to west. It has 2,106 km of boundaries, shared with Slovakia to the north, Ukraine to the northeast, Romania to the east and southeast, Serbia to the south, Croatia to the southwest, Slovenia to the west and southwest, and Austria to the west.

Lake Balaton is a freshwater rift lake in the Transdanubian region of Hungary. It is the largest lake in Central Europe, and one of the region's foremost tourist destinations. The Zala River provides the largest inflow of water to the lake, and the canalized Sió is the only outflow.