Economy of Hungary and the Tisza. The Danube also flows through parts of Germany, Austria, Slovakia, Serbia, and Romania. It is navigable within Hungary for 418 km. The Tisza River is navigable for 444 km in the country. Hungary has three major lakes. Lake Balaton, the largest, is 78 km long and from 3 to 14 km wide, with an area of 592 km. Lake Balaton is Central Europe's largest lake and a prosperous tourist spot and recreation area. Its shallow waters offer summer bathing and during the winter its frozen surface provides facilities for winter sports. Smaller bodies of water include Lake
Lake Balaton the late 19th century when landowners, ruined by "Phylloxera" attacking their grape vines, began building summer homes to rent out to the burgeoning middle classes. In Hungarian, the lake is known simply as "Balaton". It was called "lacus Pelsodis" or "Pelso" by the Romans. The name is Indo-European in origin (cf. Czech "pleso" ‘sinkhole, deep end of a lake’), later replaced by the Slavic *"bolto" (Czech "bláto", Slovak "blato", Polish "błoto") meaning 'mud, swamp' (from earlier Proto-Slavic "boltьno", , ). Slavic prince Pribina began to build in January 846 a fortress as his seat of power and several churches in