This picture of Palazzo della Cancelleria courtyard it's a curious exemple of contrast light /shadow since has two of the four equal facades in completely opposite situations: one in total shade and another in light devised by the cournor of the 2 facades. Also the detail of the columns and projection of its shadow in the background it's a very interesting example of architectural shadow bringing a little bit of the outside to the inside.

The picture is token at Palazzo della Cancelleria at 13.49