From the Wikipedia page 
Ruda Śląska [ˈruda ˈɕlɔ̃ska] (German: Ruda O.S.; Silesian: Ślůnsko Ruda) is a city in Silesia in southern Poland, near Katowice. It is a district in the Upper Silesian Metropolitan Union, a metropolis with a population of 2 million. It is located in the Silesian Highlands, on the Kłodnica river (tributary of the Oder).
It has been part of the Silesian Voivodeship since its formation in 1999. Previously, it was in Katowice Voivodeship, and before then, part of the Autonomous Silesian Voivodeship. Ruda Śląska is one of the cities in the Katowice urban area (population 2.7 million) and within the greater Silesian metropolitan area.