Nice b&w, with very creative use of symmetricism. For me, the grain is a little too noticeable...usually I use the noise to make digital b&w's look more like film, and if that is the reason for the grain here, it seems a little overdone to me, IMHO. Great depth!
very nice grainy effect, beautiful image. could also try masking the three statues (esp head area) in front from the grain (filter?) thus letting them come through clearer. don't know if that'll make sense, just something to try