In the 16th century, a new building (Palazzo Farnese) was planned and initiated on the Citadel's site but remained uncompleted.

The project included a new building on the perimeter of the Citadel that preserved the moat.

From that year on, therefore, the demolitions began starting from the southeastern side.

[1] The construction of Palazzo Farnese was interrupted in the 17th century and was never resumed.

[3] The Visconti Citadel and Palazzo Farnese's complex today hosts the Piacenza Civic Museum.