In accordance with Article 8 of Regional Law no. 89 dated December 1980, by which it is governed, the Municipal Museum is an instrument for cultural education and social development at the service of citizens; it bases its actions on the criteria of impartiality and respect for different opinions, and it works with the other local public bodies to promote the right conditions for optimum use, protection, conservation and enjoyment of the cultural and environmental heritage of the territory for which the City Council is responsible.
The Sansepolcro Municipal Museum identifies its mission with the ICOM (International Council of Museums) definition of "museum" ("a non-profit, permanent institution in the service of society and its development, open to the public, which acquires, conserves, researches, communicates and above all exhibits the tangible and intangible heritage of humanity and its environment for the purposes of education, study and enjoyment"); it shares the same overall aims with regard to the history and culture of the city of Sansepolcro, from its origins to the present day, and with regard to its relations with other centres of art and culture. In particular the Sansepolcro Municipal Museum bases its mission on its dual identity both as a museum dedicated to the masterpieces of Piero della Francesca, for which it is famous throughout the world, and as a civic museum which preserves and hands down the artistic history of the city.
In performing these tasks, the Sansepolcro Municipal Museum works in close conjunction with the City Library.