Here is a contemporary depiction of The Annunciation by John Collier:
(from http://www.hillstream.com/annunciation.html )
"This Annunciation is set in suburbia, but the symbolism is quite traditional. Mary is reading from Isaiah about the Virgin who conceives and bears a son. The lily represents her purity, and she is welcoming St. Gabriel."
While the potted lily is quite obvious (and very medieval), also note the dove perched on the triangular corner of the neighbor's roof!
Is this good use of symbols for modern iconography? Or does use of the third dimension rule this out?