The Vistula is a river in Central Europe that flows through Poland. The four cities on the Vistula are Warsaw (6 letters), Krakow (6 letters), Torun (5 letters) and Cracow (6 letters). Warsaw is the capital of Poland and is located on the banks of the Vistula River. Krakow is the second largest city in Poland and is also located on the Vistula River. Torun is a city in northern Poland and is known for its medieval architecture. Finally, Cracow is an ancient city in southern Poland and is also located on the Vistula River.