Biblioteca Comunale Planettiana is located inside Palazzo della Signoria, designed by Francesco di Giorgio Martini, a famous architect from Siena.
This institute was founded in 1859 thanks to Marquise Angelo Ghislieri, who donated his book collection. Later, also the noble family of the Pianetti, hence the name of the library, donated their valuable book and archival collection to the municipality.
It treasures various modern and antique collections mainly donated by institutions, also including the municipality archive, with a total of approximately 150,000 volumes. These collections are often consulted for researches on the local, regional and european history. This part of the library is continuously restored, reorganised and meticulously preserved.
With time, also the Public Reading Section was created, 50,000 volumes and counting, available for consultation and/or loan, most of which belong to valuable collections or series. To enrich our services there are also other dedicated sections to: reading newspapers, the local/regional, the photographic files and the special part dedicated to children from 0 to 14 years of age. Moreover, many cultural initiatives aim to promote reading in different age ranges.