 The art critics ensure that had much to do with the result of the work, the good relations and understanding between the sponsor, the banker Fabio Nelli, and the genius and mastery of the author Pedro of Mazuecos El Mozo.Built in a period in which Valladolid became more decadent, its construction lasted some twenty years, succeeding periods of inactivity in the work and a change of architect due to the death of Juan de la Lastra, the original architect.Decorated and finished following Italian classicist style, its facade, playground and stairs are the epitome of this type of architecture in Valladolid.