Oświęcim is a city in the Lesser Poland (Polish: Małopolska) province of southern Poland, situated 33 km southeast of Katowice, near the confluence of the Vistula (Wisła) and Soła rivers. The city is known internationally for being the site of the German Nazi-built Auschwitz concentration camp (the camp is also known as KL or KZ Auschwitz Birkenau) during World War II, when Poland was occupied by Nazi Germany.