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Photo: I trzcina, CC BY-SA 3.0 pl via Wikimedia Commons
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Ratusz
The Town Hall building now houses the city museum of Ostrów Wielkopolski.
Kościół Najświętszej Marii Panny
Erected in 1788, this church has been a Catholic church since 1945.
Konkatedra pw. św. Stanisława Biskupa Męczennika
This Neo-Romanesque co-cathedral was built in 1906. The growing number of Catholics in the city that time required an impressive church. The interior is very nicely decorated.