Church of Sant'Agnese in Agone
Behind the saint is the lion that is his symbol as writer of the Gospel of Mark. The book and quill pen also refer to his authorship.
This is one of a set of portraits of the evangelists. See also SS. Matthew, Luke, and John.
More of St. Mark
Photographed at the church by Richard Stracke, shared under Attribution-NonCommercial-ShareAlike license.