The church in the Old Town near Namysłów was erected in the last quarter of the 13th century. In 1348 it was the place of signing the treaty ending the Polish-Czech war, so-called Namysłów Peace. In the years 1525-1624 during the Reformation period, the church belonged to the Protestants. Wooden galleries preserved to this day were made than. In 1654, it returned to Catholics. In the documents from the visit in 1666-1667, the church wore the call of All Saints. It received the present call after 1854, when the dogma of the Immaculate Conception was established. As a result of war activities of the Second World War the church was partially destroyed. In the period after World War II it was rebuilt.
The church was built of bricks and erratic stones from which a high foundation was made. Originally, this small building consisted of a nave on a rectangular plan and a narrower, also four-sided chancel on the eastern side. The nave, reinforced from the outside with irregularly spaced buttresses, received dimensions of 11.4 x 10.1 meters, and the chancel was 6.3 x 6.8 meters. In the late Middle Ages, a sacristy was added on the north side, and the chancel was raised rather unusually. The entrance to the church led only to the nave, through the portals in the north and south walls. The interior lighting was provided by narrow, pointed windows with splayed on both sides. Those in the east façade of the chancel were higher than the openings in the nave.
The church in the Stare Miasto (now part of the Namysłów) is today a picturesque building that has retained the early Gothic shape with many original architectural details (windows, portals), and also boasts a very unusual appearance of the eastern part, raised in the Gothic period. The early modern transformations mainly affected the interior design and the upper window of the southern facade of the chancel.
Kozaczewski T., Wiejskie kościoły parafialne XIII wieku na Śląsku (miejscowości P-S), Wrocław 1994.
Website wikipedia.org, Kościół Niepokalanego Poczęcia Najświętszej Maryi Panny w Namysłowie.