The portico and façade of an elaborate neo-classical building

The vigorous handling of this drawing together the use of a low and oblique viewpoint are directly comparable to Piranesi's Architectural Fantasy formerly in the collection of Janos Scholz and now in the Pierpont Morgan Library, New York (F. Stampfle, Giovanni Battista Piranesi: Drawings in the Pierpont Morgan Library, New York, 1978, Additions to the collection no. 4). Also characteristic is the area of strong shadow across the side of the portico which is mapped out in pen as a triangle and then filled with bold hatching, a technique also found on the Morgan drawing.
While he queried some elements of the drawing in terms of Piranesi's other works, Andrew Robison suggested an appropriate date might be 1765, based on its relationship to a fully dated drawing of a Fantasy on a magnificent triumphal arch in the National Gallery of Art, Washington (J. Martineau and A. Robison (eds.), The Glory of Venice, exhib. cat., London, Royal Academy of Arts, and Washington, National Gallery of Art, 1994-95, no. 282).