Palazzo Niccolini, the AEF Headquarters, is a historic building located on via Cavour n. 37, one of the most important streets of the city of Florence. Originally, it was called via Larga degli Spadai due to the presence of numerous workshops of armorers who forged swords, but soon the name is simplified in Via Larga in everyday use.
During that time, what made the road magnificent was its breadth compared to others, as evidenced by the 18th century engraving by Giuseppe Zocchi. The current name is dedicated to Camillo Benso, Count of Cavour, a central figure in Italian history, who fundamentally contributed to the unification of the Italian State. He died a few months after the proclamation of the Kingdom of Italy, which took place on March 17, 1861, and in the wake of patriotic emotions and enthusiasm, on June 27 of the same year, Marquis Ferdinando Bartolommei, standard-bearer of Florence, proposed to name the street after him, which up until then had been called Via Larga.