sentences:  It lies approximately 25 km west from Katowice, regional capital of the Silesian Voivodeship.Gliwice is the westernmost city of the Upper Silesian metropolis, a conurbation of 1.9 million people, and is the third-largest city of this area, with 178,603 permanent residents as of 2019.It also lies within the larger Upper Silesian metropolitan area which has a population of about 5.3 million people and spans across most of eastern Upper Silesia, western Lesser Poland and the Moravian-Silesian Region in the Czech Republic.