Cosimini Building

The Palazzo delle Poste (transl. Post Office Building) is an administrative building which serves as the Poste Italiane headquarters in Grosseto, Tuscany. It was designed by architect Angiolo Mazzoni and completed in 1932. The building features an exterior in a monumental style, typical of the Fascist architecture, while the interior is characterized by a closer alignment with the modern principles of Italian rationalism. It also houses sculptures by Napoleone Martinuzzi and Domenico Ponzi.

Villino Panichi is a Liberty-style villa in Grosseto, Italy. It is located on the corner between Piazza Fratelli Rosselli and Via Oriana Fallaci, just outside the historic center in the suburb of Porta Nuova.

The Palazzo del Governo (Government Palace) is an administrative building which serves as the Italian Prefecture headquarters in Grosseto, Tuscany. It was designed in a Neoclassical style by architect Vittorio Mariani and completed in 1927. The building is situated in the suburb of Porta Nuova, outside the city walls, and is bordered by Via Roma and Viale Guglielmo Oberdan, overlooking Piazza Fratelli Rosselli, commonly known as Piazza della Vasca.

Medaglia Miracolosa (Miracolous Medal) is a Roman Catholic church in the city of Grosseto, Tuscany. It is located outside the city walls, in the suburb of Porta Nuova, with the facade overlooking Via Roma. It is the first church in Italy dedicated to the Miraculous Medal, a Marian devotion of French origin.

Villino Pastorelli (formerly villino Millanta) is a villa in Grosseto, Italy. It is located along the street which serves as the northern access route into the city walls and is the main connection between Piazza Fratelli Rosselli, in the suburb of Porta Nuova, and the historic center.

The former Casa del Fascio (Fascist House), also known as Palazzo Littorio, is located in the center of Grosseto, in Piazza del Popolo. The building is a hybrid example of eclecticism and Italian Rationalism typical of the Fascist era. It forms the southern side of Piazza del Popolo, situated between the Rimembranza Bastion and the Porta Nuova gateway. The site where the building stands was once crossed by a section of the Medicean walls of Grosseto, which were demolished between 1939 and 1941. It currently houses the Grosseto headquarters of the Guardia di Finanza.

San Pietro is a small, medieval, Romanesque style, Roman Catholic church in the comune of Grosseto, Tuscany. The first documentation of a church at the site dates to 1188. Recent restorations have found structural elements dating to the 9th century. Of the Romanesque elements remaining are four sculpted panels with figures, animals, and decoration. The interior contains a Gothic inscription from 1235, recalling the consecration under the conte Ildebrandino Aldobrandeschi. A 17th-century crucifix has been placed inside deriving from a church in Grancia. The church was restored in 2005 and since 2010 has been also officiated by the Romanian Orthodox Church.

The Biblioteca Chelliana is a public library in Grosseto, Italy, founded in 1860 by Giovanni Chelli. In 1865 it became a public library as Biblioteca comunale Chelliana. It currently occupies the Palazzo Mensini built in 1898.Italian writer Luciano Bianciardi was the director of the library from 1951 to 1954.

Palazzo Mensini is a palace in the historic center of Grosseto, Tuscany. The building is located along the eastern side of Via Giuseppe Mazzini, in the section that leads from Porta Corsica to Porta Nuova, opposite the Royal Elementary School building. It is named after Bishop Giovanni Domenico Mensini, whose will provided for the construction of the palace as the seat of the diocesan seminary. Palazzo Mensini currently houses the Chelliana Library.

Palazzo Tognetti is a palace in Grosseto, Italy. It is an Art Nouveau style building on three floors located along Corso Carducci.

The Palazzo del Genio Civile (Civil Engineering Department's Building) is a building in the historic center of Grosseto, Tuscany. It overlooks Corso Carducci, the city's main street and boulevard for strolling and commercial activities. At the rear, the building faces Piazza Baccarini. This rear view differs significantly from the main facade, both in decorative motifs and in the design of the openings, highlighting the distinctiveness of the urban context and its secondary service function.

The Chiesa dei Bigi (lit. 'Church of the ash-greys'), once known as Santa Chiara, is a late Renaissance-Baroque-style, deconsecrated Roman Catholic church in the city of Grosseto, in Tuscany, Italy. The small church is attached to a former Clarissan order-convent in the center of the town.