The ancient refectory and the wing of the convent that divides the two cloisters house the Museum which houses extraordinary works and the symbol of the flood of 1966, the Crucifix by Cimabue. Already in 1884 in the refectory (or Cenacolo) were deposited materials from the warehouses of the Opera, but the opening of a true and proper museum dates back to November 2, 1900.