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Saint Stanislaus Kostka Catholic Church (Polish: Kościół Świętego Stanisława Kostki) is a historic Polish church of the Roman Catholic Archdiocese of Chicago that is located at 1351 West Evergreen Avenue in the Pulaski Park neighborhood of Chicago, Illinois, United States. It is designated as the Sanctuary of Divine Mercy of the Archdiocese.
The Church is the "mother church" of all Polish churches in the Archdiocese of Chicago and is open 24 hours, 7 days per week, and hosts Exposition of the Blessed Sacrament at all times except during the celebration of Holy Mass.
It is a prime example of the Polish Cathedral style of churches in both its opulence and grand scale. With the Basilica of St. Hyacinth, St. Mary of the Angels Church, St. John Cantius, and St. Hedwig Church it is one of many monumental Polish churches visible from the Kennedy Expressway that runs through Chicago.