Castel Penede is located on a rocky spur, the farthest north-west extension of Monte Baldo, protruding to close up the pass from Upper Garda to Adige Valley, protecting the Torbole harbour. The structure of the fortified complex spans over a period of almost five centuries, from the twelfth to the sixteenth century, in an area featuring an at least bi-millennial settlement sequence. The path of knowledge started in 2008 with the historic and stratigraphic analysis. The carrying out of the executive project will turn out to be of a cultural interest, as the removal of the collapsed material will be effected, found in the most ancient rooms which will be then revamped and restored. These works will bring to light some structures (walls, architectonic elements, flooring plans, plasters, vaults and staircases...) which shall be studied, filed and reported as stratigraphic units to update the analysis of the elevations previously carried out. The knowledge methodology adopted to get comprehension of the castle according to scientific methods will be then carried on. The investigations on the architectures have highlighted the relevance of the stratigraphic analysis meant not only as a fundamental aspect of the path of knowledge of a historical building, but also as a basic step to preserve the cultural heritage piece. This will safeguard the readability of the constructed item and of its morphological-stratigraphic connections to the extent of making the traces of the contemporary works on the built item itself both evident and acknowledgeable during the treatment of the walls’ surface joints. These operations carried out by skilled workers can be nearly classified as a specialised service which is often not adequately matched in the work practice. It is essential to point out the role of knowledge: knowledge of the item means you know how to restore it.