This is the last image I make for "unbuild architecture" article (Muy Interesante magazine). Leonardo da Vinci draw some sketchs about a interesting urabn project: the perfect city. You can see some of his ideas: channels for transport, tunnels and underground channels for common people (high society people walk the higher levels), sloped to center strrets for drain the rain water and the rubbish, porches�
Is a pure lightwave model I render in radiosity dome for avoid shadows. I make roman style buildings because Leonardo uses for its designs the Vitrubio rules.