Three thousand kilometers of the Danube, the second longest river of the Old World, - three millennia of human history. The river movement from the German source to the Ukrainian-Romanian mouth through the territories of Austria and Slovakia, Hungary and Croatia, Serbia and Bulgaria is a journey into the past of powerful empires and into the present of a new Europe. At all times, the Danube inspired the exploits and accomplishments of commanders and politicians, poets and artists, composers and sculptors. Today's trips along the Danube confirm: this river marks the most important political and cultural arc of the Old World, the zone of rivalry and cooperation of peoples, the area of ​ ​ interpenetration of their languages ​ ​ and customs.