The church was built in the mid-sixteenth century from the foundation of Nikodem Łekiński, a castellan of Nakło. It was established in a settlement which was originally a princely wood – earth stronghold, mentioned in 1136 as a castellany, six years later inhabited by Cistercians brought from Altenberg. They funded in Łekno the church preceding the late-gothic temple, but in 1396 they moved to Wągrowiec. In 1370 Łekno was mentioned as a town which privileges were confirmed in 1444. Church was thoroughly restored in the 17th, 18th and around the mid-19th century.
The church was built within the center of the settlement, on the top of the hill north of the market. It is a three-nave pseudo-hall building, with chancel slightly lower than the central nave, close to its width, ended with a polygon. At the chancel from the north there is a sacristy, and from the south the former chapel of St. Joseph, crowned with an early renaissance gable. To the south aisle adjoins the 16th-century porch, which is probably an unfinished tower. There are two pentagonal turrets at the facade, accessible by stairs in a thick wall. In the presbytery, naves and the former chapel, the original stellar vault has been preserved.
Maluśkiewicz P., Gotyckie kościoły w Wielkopolsce, Poznań 2008.
Website, regionwielkopolska.pl, Kościół pw. św. Apostołów Piotra i Pawła w Łeknie.
Website zabytek.pl, Kościół pw. śś. Piotra i Pawła Łekno.