The Parish of the Assumption of the Blessed Virgin Mary in Racibórz, established before 1246, is the oldest parish in the city and currently belongs to the Racibórz deanery in the Diocese of Opole. Its history dates back to the time when Racibórz, founded by Duke Casimir I under Flemish law, gained parish status and a parish church. The first known parish priest appeared in 1286, and in 1416, the collegiate chapter relocated here. The parish also includes the Church of the Holy Spirit, built by the Dominican Sisters in 1335, and the Church of St. James the Elder, which has its roots in a Dominican monastery from the 13th century. The Church of St. James survived secularization and, despite plans for its demolition in the 19th century, was preserved for the faithful thanks to the efforts of parish priest Jan Nepomucen Zolondek. It is worth noting that between 1945 and 1947, the church was rebuilt after the destruction of World War II, which damaged its roof and interior. The Church of the Assumption of the Blessed Virgin Mary, located in the southern corner of the market square, represents the Gothic architectural style and has retained its current form since a thorough reconstruction after a fire in 1300. It features a three-bay nave and slender interior proportions, accentuated by pointed-arch windows. The church suffered repeated destruction, including in 1945, when its roof and interior were damaged. Its reconstruction lasted until 1959, and in 2005, the 800th anniversary of its existence was celebrated. The parish has been led by many parish priests, including Fr. Bronisław Gałoński and Fr. Marian Jan Obruśnik. Interestingly, the Dominican church, still in use today, was designated for conducting services in Polish under the provisions of 1811. The Parish of the Assumption of the Blessed Virgin Mary is a significant element of Racibórz's cultural heritage, combining history with architecture and the traditions of the local community.