The church was erected in the years 1423-1428 at the site of the earlier wooden structure. Initially it was a building with only one nave and a narrower chancel. It was expanded at the turn of the 15th and 16th century by the addition of aisles and elevation of the tower. In the middle of the 16th century the tower was topped by a renaissance attic. In the years 1598-1602 the renaissance, funeral chapel of Gostomscy was added. In 1423 the church was raised to the dignity of the collegiate. From the end of the 15th century up to the Partitioning of Poland, in the area of the temple and adjacent necropolis, regular, local parliaments were held for the Poznań and Kalisz provinces. During the Sejmiks, senators debated inside the temple, deputies in the stands in front of the church, and the secretary in the chapel, separated from the irascible debaters by a metal grate.
The collegiate church is a basilica building, with a narrower than the nave, elongated, five-sided ended chancel. The sacristy adjoins it from the north, and the late-renaissance octagonal tomb chapel from the south. A four-sided, soaring tower was added to the west facade, with elevations richly articulated by blendes. Inside the church you can see original gothic stellar vaults from the turn of the 15th and 16th centuries in the nave and cross-ribbed vaults from the turn of the first half of the 15th century in the presbytery.
Maluśkiewicz P., Gotyckie kościoły w Wielkopolsce, Poznań 2008.
Website regionwielkopolska.pl, Kościół pw. NMP Wniebowziętej w Środzie Wielkopolskiej.