The Palazzo Pretorio Museum was closed in 1998 in order to carry out a complete restoration. The third floor of the Palazzo had already been shut since 1983, in order to replace the roof.

The story of the recent renovations gets under way in 1986, when Gae Aulenti and Bianca Ballestrero were given overall responsibility for an ambitious project not only comprising the Palazzo itself, but also all the adjacent buildings. For a number of reasons the project was significantly reshaped in the subsequent years; while, in 1998, in order to allow for the consolidation of the buildings, the Museum was closed and the collections left the building.

Work continued, despite various difficulties and challenges; finally in 2009, the project was reviewed by technical staff of the Municipality public works department, which led to various modifications being made, including, for example, bringing the main entrance back to the square.

With this last modification, the Palazzo internal decorations were brought back, including the beautiful ancient coat of arms of the podestà; the frescoes on the walls and the magnificent painted wooden ceilings, while the entire building was prepared for its new life of fruitfulness and conservation and made ready to welcome the renovated Museum.