St. Adalbert Church was the first parish church in the emerging 13th-century town. The burghers who attended it constantly renovated the edifice in keeping with the latest architectural styles. Originally wooden, the church was rebuilt as a gothic structure in the 15th century. Subsequently, as the congregation grew bigger, the church was expanded in the renaissance style with funding from its generous founders. The Church was an excellent example of the adoption of new architectural solutions – its gothic shape incorporated elements of renaissance architecture.
The Crypt holds the remains of Wielkopolska’s most eminent residents, among them Gen. Jan Henryk Dąbrowski, the creator of the Polish Legions in Italy, Józef Wybicki, the author of the Polish national anthem, Karol Marcinkowski, an outstanding doctor and social activist, and Feliks Nowowiejski, a magnificent composer and the author of the Polish Rota.