The Holy Trinity Church in Bydgoszcz, located on Holy Trinity Street, is a historic Catholic temple whose history spans over 250 years. The current building was erected on the foundations of a Gothic church that existed from 1550 to 1829. The construction of the new church was a response to the growing Catholic population in Bydgoszcz in the second half of the 19th century. The initiative for its construction was taken by Father Dr. Józef Choraszewski, who organized a meeting of Polish and German Catholics in 1895, emphasizing the need for new churches. The architectural plans for the church changed several times, and construction finally began in 1909. Completed in 1912, the church was built in the Neo-Baroque style with Neo-Renaissance architectural elements. It features a three-nave structure with an asymmetrical tower and a beautiful Chapel of Our Lady of Częstochowa. The interior is adorned with polychrome paintings and stained-glass windows, with the central focus being a sculpture of the Holy Trinity. Among the interesting facts, it is worth noting that this is the only Polish Catholic church that the German authorities allowed to be built in Bydgoszcz during the partitions. The church has been the site of many significant religious events, including services conducted exclusively in Polish. The organ, built in 1912, is a valuable historical monument known for its unique acoustics. The celebrations of the church’s 100th anniversary of consecration in 2013 drew the attention of the local community, highlighting its importance to the region’s culture and spirituality. The Holy Trinity Church is not only a place of prayer but also a symbol of the historical struggle of Poles to preserve their identity during difficult times.