Piazza Trieste acquired this name at the end of the Great War (1915-1918). Also known as Piazza del Castello, this space was created by the Austrians in 1845-1846 through the filling of the ancient counter-ditch of Castel San Zeno, in conjunction with some renovation and expansion works carried out to create a efficient military barracks.
In the past the castle was connected with the internal spaces of the village by two drawbridges. Both bridges remained in use well beyond the medieval period and were replaced by masonry arches only in the Venetian era. The current arches could date back to the 18th century.
Since 2004, extensive excavation tests have been carried out by the Regional Superintendency, which have brought to light substantial remains of an ancient rampart under the western wall of the castle, part of the containment perimeter of the basins of the counter-ditch, as well as large pillars of the original access bridge to the inner courtyard.
