Gothic church of Saint Barbara was erected before 1463 from the foundation of the Borkowie family from Gryżyna. Probably originally it was an unvoulted, small building consisting only of the later chancel and sacristy. After a few or several years, the nave was added, and in the first half of the 16th century the church was rebuilt and enlarged by the Ostrorog Lwowscy family (gables, stellar vaults). At the end of the 16th century, it was handed over to the Lutherans. It returned to the Catholics in 1622.
The church was built of bricks on a stone foundation, as a single-nave rectangular, three-bay structure. On the eastern side there was a two-bay, narrower than the nave, closed on three sides chancel, and a sacristy with a vestibule was attached to it from the north. The nave was reinforced with stepped buttresses and covered with a gable roof, closed with gables: with pinnacles from the west and whitewashed panels from the east. The presbytery was covered with a five-pitched roof with a ridge entering the eastern gable of the nave. In the southern facade of the nave there were pointed windows and a portal, separated by stepped buttresses, while the northern side of the nave, in accordance with the medieval building tradition, was not pierced with any windows. In the upper parts of the facade, a plastered frieze was led, and above the crowning cornice, a gothic part crowned with a gable with pinnacles..
Inside the nave was separated from the presbytery by a low ogival chancel arch. Both rooms, initially covered with wooden flat ceilings or an open roof truss, in the first half of the 16th century were covered with stellar vaults (after raising the perimeter walls, which had to be built to accommodate beautiful though heavy vaults). Interestingly, the three-bay division of the vault overlapped with the original two-bay division of the walls.
Katalog Zabytków Sztuki w Polsce, t. V, Województwo poznańskie, Ruszczyńska.T, Sławska A., Warszawa 1961.
Kowalski Z., Gotyk wielkopolski. Architektura sakralna XIII-XVI wieku, Poznań 2010.
Maluśkiewicz P., Gotyckie kościoły w Wielkopolsce, Poznań 2008.
Webpage zabytek.pl, Kościół parafialny pw. Św. Barbary Jaszkowo.