Tczew is a city on the Vistula River in Eastern Pomerania, Kociewie, northern Poland with 59,111 inhabitants. The city is known for its Old Town and the Vistula Bridge, or Bridge of Tczew, which played a key role in the Invasion of Poland during World War II.

The Vistula is the longest river in Poland and the ninth-longest in Europe, at 1,047 kilometres in length. Its drainage basin, extending into three other countries apart from Poland, covers 193,960 km2 (74,890 sq mi), of which 168,868 km2 (65,200 sq mi) is in Poland.