Antonio da Sangallo the Younger and the Building Site of the citadel of Ancona

I'd like to introduce my recent research concerning the engineering activity of Antonio da Sangallo the Younger and his collaborators in the Marches' territory and especially the study of the building site activity promoted by the “Camera Apostolica”. On the basis of some sketches of Antonio da Sangallo the Younger, sixteenth century papal engineer, this search gathers documents relative to an iconographical study of machines (barges, hoists, cranes, and mills) in the Adriatic coast, especially in the citadel of Ancona, between 1530 and 1540 through the traditional schools of Florence and Siena during Renaissance.