The Church of St. James the Apostle in Sandomierz, built in the 13th century, is an example of the fusion of early Gothic and late Romanesque architecture. It is one of the oldest brick churches in Poland and Europe, featuring characteristic elements such as rib vaults and narrow windows. The church played an important role in the history of the Dominican convent in Kraków, established on the initiative of Bishop Iwo Odrowąż, who sought to strengthen the faith in the region. Initially, the foundation may have been associated with Princess Adelajda Kazimierzówna, but many facts suggest that the church's history is even older. In the years 1260–1261, during the Mongol invasion, most of the monks were killed, and the church suffered numerous damages in subsequent wars. The present-day church, with its long chancel and many valuable furnishings, including Baroque chapels, has survived despite its turbulent history. Stained glass windows and modern interior elements, such as the altar created by Wiktor Zin, harmonize with the historical character of the building. The church and the Dominican monastery, associated with the Sandomierz Martyrs, have gained the status of a sanctuary. In 2017, the site was inscribed on the list of Historic Monuments, highlighting its importance to Polish cultural heritage. Sandomierz has also become a point on the Małopolska Way of St. James, attracting pilgrims. Additionally, the church appears in the popular TV series "Father Matthew," which has increased its recognition. The architecture, history, and cultural significance make the Church of St. James the Apostle in Sandomierz one of the most important religious sites in Poland.