Piazza Unità d'Italia (during the Austrian period it was called Piazza Grande, later it was also known as Piazza Francesco Giuseppe) is the main square of Trieste. It is located at the foot of the San Giusto hill, between Borgo Teresiano and Borgo Giuseppino. Rectangular in plan, the square opens onto the Gulf of Trieste on one side and is surrounded by numerous palaces and public buildings. Overlooking the square are the headquarters of various entities: the town hall of Trieste, the building of the regional council of Friuli Venezia Giulia and the prefecture of the capital