In the Liberation Square (Piazza della Libertà) you can see some impressive Palazzo. Construction of the “Palatium Vetus” began as early as 1170, when the city was founded. It served as the political and legal administrative center of Alessandria. The construction of other palaces in Piazza della Libertà dragged on for over a century and was repeatedly interrupted. There is the town hall and the Palazzo Ghilini, seat of the office of the provincial government and prefecture.
After Napoleon conquered Alessandria from the Austrians in 1800, the Piazza della Libertà was converted into a place for the armed forces. For this, the former cathedral, which was previously there, was demolished. Alessandria became the capital of the Napoleonic Département of Marengo.