The first documentary reference to Santa María de Piasca is a donation from 930 making reference to a basilica just founded on the site. Little over a decade later, in 941, an agreement was recorded between 36 nuns and an unknown number of monks under an abbess Aylo, telling us that the monastery housed a community of both sexes. The monastery's dual character faced several oscillations, with the nuns leaving and returning twice. The archeological evidence of the original monastic buildings shows a small single nave church and separate spaces for the two groups.
A foundation stone records that the current church on the site, the Romanesque edifice, was dedicated in 1172 under a prior Petrus Albus. By this point the monastery had been incorporated into the larger Cluniac monastery of San Facundo y Primitivo de Sahagún (in 1122) and brought under the Benedictine Rule. The inscription also names the master of the project as Covaterio. The church has two sculpted portals, the west and the south. The portals have most likely been somewhat reconstructed, possibly with elements exchanged between the two. The triple arcade on the west façade has obviously been renovated as the central sculpture of Mary is from the sixteenth century. The two apostles (Peter and Paul) to her sides may have originally flanked an image of Christ, forming, as Ruth Bartal suggests, an abbreviated apostolado.
References:Kakesbeck is one of the largest medieval fortifications in Münsterland and the oldest castle in Lüdinghausen. The imposingly grown complex originated in 1120 as a motte, a small hilltop tower castle. After numerous changes of ownership, the castle was extended onto two islands, but it was not until the 14th century that it underwent significant alterations and extensions under the von Oer family. The estate experienced its heyday in the middle of the 18th century, when it covered an area of almost one square kilometre and consisted of five further outer castles in addition to the core castle, which were secured by ramparts and moats.
The well-maintained condition of the castle today is thanks to the late Wilfried Grewing, the former lord of the castle. The foundation named after him has been particularly committed to preserving the property since 2020.