It forms the southern side of Piazza del Popolo, situated between the Rimembranza Bastion and the Porta Nuova gateway.

The design for the Casa del Fascio in Grosseto was proposed in 1925 by engineer Renato Della Rocca, with the building officially inaugurated in 1927.

[1] The building acquired its final form in 1939 when a new wing was constructed to unite the two original structures, crowned by a monumental tower in Rationalist style, created by Ugo Giovannozzi.

[2] Between 1939 and 1941, a segment of the city walls was demolished, integrating the structure more seamlessly with the Piazza del Popolo, which was then dedicated to the "Martyrs of Fascism".

[1] The building features a rectangular layout, prominently distinguished by its massive square-section tower, which makes it easily recognizable.