attila the hun banat beclean belgrade bicu river blaj bodrog bratislava budapest calafat cejkov central europe chornohora cirocha croatian language danube dej donaueschingen drava drobeta-turnu severin esztergom european union geography of austria geography of bulgaria geography of croatia geography of germany geography of hungary geography of moldova geography of romania geography of serbia geography of slovakia geography of ukraine german language giurgiu gorgany great hungarian plain great morava hron hungarian language hungary iller ingolstadt inn river isar iskar iza river jiu river kilometre laborec lake balaton lake tisza latin lech river linz list of crossings of the danube river list of tributaries of the danube loire valley mara river metre miskolc morava river netherlands novi sad olt river ondava osam passau pavlovce nad uhom plains pliny the elder po river regen river regensburg river romania romanian language rousse rusyn language sava river serbia serbian language silistra siret river slovak language slovakia smederevo sulina svishtov szeged szeghalom szolnok tiszabecs titel tokaj tulcea ukraine ukrainian language ulm vedea river vidin vienna vojvodina vukovar wikimedia commons yantra river zagyva