This stunning photograph of santorini at sunset may bring back memories of happy holidays and will certainly deliver plenty of puzzling challenges taken in the little town of oia the white washed buildings tumble down the hillside towards the sea the towns church sits at the top of the hill the sails of a rustic windmill are silhouetted against the early evening sky and warm golden tones glow from the street lights this will prove to be a challenging jigsaw because of the limited colour p