The Living Camera

Stephen Wiltshire is a stunningly fantastically talented autistic guy. He really has a photographic memory and the ability to turn things into architecturally accurate drawings. Check out this video of him drawing the city of Rome after only ever seeing it in a 30 minute helicopter flight and then recreating it over 3 days in a 15 ft panorama(I know the link says 45 mins but his own site says it was a 30 min flight).