It is located on Corso Carducci, the main street in the city center, and houses the Bishop's residence, the diocesan offices, and the curia of the Diocese of Grosseto.

[1] During the period of sede vacante (1858–1867), following the annexation of the Grand Duchy of Tuscany to the Kingdom of Sardinia, the building served as the first location of the Chelliana Library, opened by Canon Giovanni Chelli in 1860.

[4] Between 1927 and 1928, Bishop Gustavo Matteoni expanded the building, raising part of it, and restored the façade facing the main street.

The central entrance portal, topped with a semicircular arch, is surrounded by two horizontal bands at different levels that enclose the coat of arms of the current bishop.

Above this, there is a decorative cornice that supports the monumental coat of arms of Bishop Paolo Galeazzi, located in the upper central part of the facade.