Siestrzeń [ˈɕɛstʂɛɲ] is a village in the administrative district of Gmina Żabia Wola, within Grodzisk Mazowiecki County, Masovian Voivodeship, in east-central Poland.

[1] It lies approximately 10 kilometres (6 mi) south-east of Grodzisk Mazowiecki and 27 km (17 mi) south-west of Warsaw.

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