The museo dell'Opera and is hosted in the basement of the Palace, recovered and used respecting the original architecture.
Collects a series of objects which document and illustrate the work vanvitelliana, history of Caserta area, including archaeological finds discovered in the excavations of 1990 and the life of the Bourbon Court between the 18th and 19th centuries. In addition, several other works of art kept for decades in the deposits of the Superintendencies, bells and only now returned to the public.
Very interesting are the architectural models made by cabinetmaker Anthony Rosz and commissioned by Vanvitelli. The models, which faithfully reproduced the Palace, were subjected by the opinion of Charles III.