 Ansaldo's works are typical of the Genoese eclecticism of the early 17th century, influenced by Flemish artists such as Rubens and Anthony van Dyck and the Milanese Giovanni Battista Crespi, Giulio Cesare Procaccini and "il Morazzone".Ansaldo was responsible for the fresco decoration of the cupola of the Basilica della Santissima Annunziata del Vastato of Genova, completed during 1635–1638, just before his death.His "Annunciation" fresco is considered the first true Baroque painting in the city.