Stephen Wiltshire is a savant with a very unusual skill. After looking at a landscape just once, he can remember and draw it in incredible detail. In this footage, he is flown over Rome for the first time in his life. He is then given just 72 hours to create a drawing of it. When it's finished, the detail is so thorough that all the buildings have the correct number of windows!

This is from the documentary Beautiful Minds: A Voyage Into The Brain, which also featured Kim Peek.

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