The flexibility and abundance of technical means and their progressively decreasing costs are often making easier a coarse approach to the restoration of heritage buildings, which alters their original design and construction materials. When an intervention is necessary, the focus should be on reinstating the conditions that enabled them to reach us and preserve their material integrity, also in the parts that are not visible, since the ancient monuments are not mere icons, but tangible, material witnesses of the history of mankind. The geotechnical solutions and technologies developed in recent years offer new and interesting ways to a respectful restoration of heritage buildings. This approach, which can be defined as a soft approach, is gradually gaining ground, as it can be seen in some cases, but it is still not generally understood.