This unusual curved freehand drawing of Anish Kapoor’s landmark  Cloud Gate sculpture in Millennium Park is now on view at Chicago’s O’Hare International Airport.

“Have No Narrow Perspective,” created by twin artists Ryan and Trevor Oakes is in O’Hare’s Terminal 2 , post-security, and a bit north of the Explore Chicago exhibit.

The 20-something Oakes twins seem to have developed a new way to draw what they see onto a curved surface, a method described by Columbia University’s perceptual historian Jonathan Crary as “one of the most original breakthroughs in the rendering of visual space since the Renaissance.”

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