The Palazzo del Senato is a Baroque architecture palace in central Milan. Presently is serves as the Archive of the State. Construction of the palace was begun in 1608 by cardinal Federico Borromeo, who wished to erect a Swiss seminary college; the site held ruins of ancient convent of Umiliate nuns. Design of the project was initially assigned to Fabio Mangone, but completed by Francesco Maria Richini. The latter architect solved the problem of the disparate registers of the collegio and the adjacent church, with a convex façade. It curves forward on the right so that the edge on that side matches the church. In 1786, it became the host of government offices of the Habsburg Austrian Empire.