In the Park there are many military positions dating back to the period 1940-1943, when in Sardinia several defensive systems were built. The structures belonging to "FRONTE A TERRA DI CAGLIARI" represented an essential stronghold for the defense of Cagliari from the assaults both from the sea and from the inland, and have today an important historical-artistic value.
The land Front is a defensive line consisting of groups of buildings called "capisaldi" (that is, strongholds), following the urban perimeter of the town of Cagliari and protecting the port.