British artist—and “human camera”—Stephen Wiltshire has set about drawing a 20-ft. long panorama of New York City’s skyline.  What’s astounding about this, though, is that Wiltshire, who has autism, has seen the city just once—during a 20-minute helicopter ride.  He’s sketching it entirely from memory.  You can watch a bit of Wiltshire’s process, and progress, below:

 
In the NYT: Like A Skyline Is Etched In His Head

(via New York Magazine)