The church was designed by Roger Sławski, who was also responsible for designing the Grand Theatre in Poznań.
It attained the status of a co-cathedral in 1992 following the administrative restructuring of Polish dioceses by Pope John Paul II.
The construction was financed largely through donations from local parishioners during a period of Prussian partitions.
The tower features a four-sided clock installation that was fully restored to function in the modern era.
The structure is built primarily of brick with distinctive decorative limestone elements.
The Co-cathedral of St. Stanislaus Bishop and Martyr in Ostrów Wielkopolski is a neo-Romanesque structure built between 1904 and 1906. It serves as one of the two seats of the Diocese of Kalisz, elevating it to co-cathedral status in 1992. Designed by architect Roger Sławski, the building features a prominent 60-meter high tower visible across the town center. The interior architecture is characterized by a three-nave basilica layout with a transept. Notable interior elements include stained glass windows and altars constructed during the early 20th century. The church replaced an earlier 18th-century wooden building that proved insufficient for the growing parish population at the time. It underwent significant restoration work to preserve its historical brick masonry and architectural detailing.
From the park across the street for a clear vertical view of the tower and facade.
Walk around the perimeter to view the complex brick masonry and historical gargoyles.
Check the notice boards at the main entrance for announcements regarding special musical concerts held in the nave.
Look for the commemorative plaques in the surrounding courtyard dedicated to local historical figures.
Do not attempt to enter through the sacristy doors; use the main entrance facing the square.
Avoid visiting during Sunday morning liturgies if you wish to tour the interior quietly.
Maintain silence, remove hats, and refrain from taking photographs during ongoing religious services.
