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