Katowice is a city in southern Poland, the main city of the Upper Silesian Industry Area and the capital of Silesian Voivodeship.
It's the largest city of Katowice Urban Area - the largest conurbation in Poland populated by about 2.7 million people. Conurbation consists of 19 cities. Beside Katowice there are eight cities with more than 100,000 inhabitants in this area: Sosnowiec, Gliwice, Zabrze, Bytom, Ruda Śląska, Tychy, Dąbrowa Górnicza, Chorzów. All of them are connected by a joint public transport system.