Saimir Strati, 40, creates a portrait of Leonardo Da Vinci using industrial nails at the International Centre of Culture in Tirana August 23, 2006. Strati is using some 500,000 industrial nails on a 8 sq m wooden board to create what he hopes will be entered in the Guinness World Records as the largest 3-D nail mosaic ever attempted. The work will take around 25 days to complete. ((Reuters)