During the last week of October 2016, Stephen Wiltshire flew to Mexico City. From the instant he landed, the world-renowned artist drew a crowd.
Dozens of fans and reporters (and a few thousand fans on his live-stream) came to watch him sketch a panoramic view of the Mexico City skyline. The audience watched, mouths agape, while Wiltshire, dressed in a hoodie and headphones, sketched hundreds of buildings.
He captured details like roundabouts, windows, and trees. It would be a true feat for any local, but that's what makes Wiltshire so impressive: He's not from Mexico City. Or even Mexico. He's from London, and he drew all this from memory.