River Severn River Thames River Humber River Trent
Danube River River Dnieper River Rhine River Volga
River Don Northern Divina Western Divina River Dnieper
Northern Divina River Dnieper River Dnieman River Dniester
River Don River Volga Western Divina River Dnieper
Madrid Berlin Prague Copenhagen
River Elbe River Rhone River Loire Danube River
Copenhagen Madrid Amsterdam Berlin