The capital of W. Prussia, once a Hanse town, on the Vistula, 4 m. from the mouth; one of the great ports and trading centres of Germany and in the N. of Europe; it is traversed by canals, and many of the houses are built on piles of wood; exports grain brought down the river on timber rafts from the great grain country in the S.; it is one of the chief stations of the German navy.