The aim of this study is to find the development lines of the monastery and castle complex in Ihlow and to place it in a cultural-historical framework. The analysis is based on the excavations carried out between 2006 and 2008, whose complex stratigraphy allows a re-evaluation of the older excavations. The development of the location can be divided into five medieval monastic building phases and two modern castle buildings. The first three construction phases of the founding period are particularly important. In a supra-regional comparison, differences in the construction of foundation structures, as they were built up into the 12th century, are among those which have been demonstrable since the 12th century. The condition and alteration of the monastic buildings in the fourteenth and fifteenth centuries of the sixteenth century are markedly different from the so-called ideal plans. On the one hand, this is due to changes in the structure of the convent in the Late Middle Ages. On the other hand, the comparison with other monastries of the Cistercian Order points to a separate construction plan for smaller convents. For the castle of the 16th and 17th century, a clear functional change of the landlord's estate can be demonstrated.