Sosnowiec is a city located in the south of Poland, in a tributary of the Wisla (Vistula) river. It is a county capital neighbouring Katowice, a mining and industrial region, and one of the largest cities in the Silesian Voivodship. Its estimated population as of 1993 was 258,500.
It is sometimes known by the names Sosnowietz, Sosnovitz (Yiddish), Sosnovyts, Sosnowyts, Sosnovytz, Sosnowytz, Sosnovets (Russian), Sosnovetz. There are 5 other smaller towns in Poland also called Sosnowiec. They are located in the regions of Bydgoszcz, Kielce, Łódź, Łomża, and Opole.

Tourist attractions
Palace Sielecki Castle, 17th-century, Dietel Palace, Palace (Chemiczna).