Have you ever thought that 10 European countries (Germany, Austria, Slovakia, Hungary, Croatia, Serbia, Romania, Bulgaria, Republic of Moldova and Ukraine) and 4 state capitals (Vienna, Bratislava, Budapest and Belgrade) can have one and the same thing in common? Well, it is true! There is one thing that brings all these places together. It is a character who has influenced the lives of local people, it has sheltered them from dangers or represented a source of living, it has brought new visitors or inspired people to develop new technologies. Did you guess? It is the only European river which flows from west to east and the second longest river in Europe: the Danube.