Danube River River Vistula River Rhone River Volga
River Douro River Tagus River Ebro Aragon River
Tyrhenian Sea Caspian Sea Black Sea Adriatic Sea
River Volga River Dnieper River Rhine Danube River
Rhone / Danube Po / Tiber Loire / Tagus Rhine / Danube
Loire River River Seine River Rhone Dordogne River
Forth River River Spey River Tay River Clyde
River Rhone River Seine Danube River River Rhine
Danube River River Seine River Rhone River Volga