On the ground floor, there is a large room with cross vaults where the processing phases that used hydraulic energy were once allocated.

Here we find the Bottega, the place where the paper used to be left to rest and where all the set-up works were carried out: from selection to the realization of the reams and then envelope folding.

This part of the building, equipped with characteristic "windows" with adjustable closures, is called a spanditoio; it was used to dry the sheets of paper made.

The ancient paper factory, called Le Carte, is one of the most important monuments of industrial archeology in the area.

Through this documentation it was possible to reconstruct the historical activity of the paper mill and the entrepreneurial links of the Magnani company with other industries in Italy and abroad.