Keeping the title of the 2nd-longest river in Europe, bested only through the Volga River (central and south Russia), the Danube’s banking institutions are lined with castles and fortresses, bodily displaying the importance of the river that tracks such as the famous waltz, The Blue Danube ( This electronic conversation https://visit-chain-bridge31826.thelateblog.com/35722208/chain-bridge-budapest-an-overview