At the Southern side of the schoolmaster's house excavations brought about the remains of a 20 meters long and 7 meters wide stone building. The top of the walls were covered by a burn layer, and tzhe time of the fire can be dated to about 1230. The building was probably built and used in the beginning of the 12th century.

After the change of regime the Hungarian Cistercian Order demanded and gained back the monastery building, which was handed over to Pásztó for museologic purposes. One of the conditions was to demonstrate the history and monasteries of the Hungarian Cistercian Order.

Because of its favourable geographical conditions Pásztó had been inhabited as early as in the prehistoric era. After the Hungarian conquest the region was shifted into the ownership of the Hungarian royal family. In the 12th century there was possibly a monastery functioning in Pásztó.

The building has three divisions: the portal leads ibto the kitchen, and the room opening to the North was served as a lard. Herein there were three pieces of grain container dug into the floor. These holes proved a real archaeological sensation, for almost the whole scale of th 15-16th century housekeeping instruments were discovered in hem. Possibly the news of the Turkish approach (1551) made the school master to flee and carefully hide his values in the holes.