The church of the Immaculate Conception of the Blessed Virgin Mary in Szreńsk was built around 1530 from the private foundation of Feliks Szreński, the owner of the town and the voivode of Płock. The temple was thoroughly renovated at the end of the eighteenth and mid-twentieth century.
The church was built of brick in the flemish bond. It consists of a rectangular nave with four spans and a narrower, four-sided chancel with two spans on the eastern side. On the north side, a two-storey sacristy is added to it, while on the south side a chapel of St. Anne. Both the nave and the chancel were reinforced with buttresses, between which ogival windows were placed. Only eastern gable has survived from gothic gables decorated with blendes and pinnacles. Blendes are also visible at the eastern wall of the nave.
Inside, the presbytery was topped with a stellar vault, a diamond vault has been preserved in the chapel. From the original equipment you can see a timber gothic sculpture called Pieta from Szreńsk, made in the years 1430-1440 and the renaissance tombstone of Feliks Szreński. The brick wall surrounding the temple also comes from the time of the church erection.
Żabicki J., Leksykon zabytków architektury Mazowsza i Podlasia, Warszawa 2010.