The provincial capital, Grosseto è una delle poche città che mantiene intatte le mura medicee costruite nel XVI secolo in sostituzione di quelle Medioevali. The walls surrounding the center, il quale è ricco di chiese, museums, and monuments illustrating the history of these places, have a hexagonal layout. The oldest church in the city is St.. Peter's. Equally famous is the Convent of St. Francis.
In the main square you can find: the Town Hall built in 1870, the Cathedral of San Lorenzo dating back to 1200 but restored between 1816 and 1855. with its original central Rose window, widely used for lightning in the Middle Ages. The interior of the Church has a Latin cross layout with three naves. Also in the square you can see the Administrative Building of the Province. in Neo-Gothic style, opened to the public in 1903.
Museums: Museum of Natural History: is divided into 11 rooms in which you can admire the Mineralogy, Paleontology, Zoologia e Preistoria. Museo Archeologico e d’Arte Sacra well known for both the quality and quantity of its artifacts. It is’ is divided into 5 sections for a total of 40 rooms plus some laboratories used by archaeologists and university students to restore and clean the artifacts found in excavations. Boards representing sacred scenes are on display in the second section of the museum.