Książenice is a village in the administrative district of Gmina Grodzisk Mazowiecki, within Grodzisk Mazowiecki County, Masovian Voivodeship, in east-central Poland. It lies approximately 7 km south-east of Grodzisk Mazowiecki and 27 km south-west of Warsaw. In the village there is located the Legia Training Center for the Legia Warsaw first team and their reserves and youth teams, as U18, U17, U16 and U15. The center facilities are, among others, eight pitches; six with natural turf and two with artificial turf, hotel part and dormitory for players aged 13–18.