Through the mayor, the Assessorato alla Cultura and its museums, the Municipality of Milan is the principal commissioner of the restoration of the Sala delle Asse.
The purpose of the project is not only the restoration of the artwork, but also to carry out a detailed study with the aim of identifying the different stages and determining what remains of Leonardo’s original work.

The restoration project is part of the “Patto per Milano”, an agreement between the Municipality of Milan and the Ministry of Cultural Heritage and Tourism, and was also one of the initiatives undertaken as preparation for the universal exposition that took place in Milano in 2015 event and featured Leonardo as its leading symbol.