Since 1987, artist and illustrator David Zinn has stalked the streets of Ann Arbor, Michigan, creating temporary illustrations with chalk and charcoal. Zinn improvises each piece on the spot and makes use of found objects, street fixtures, and stairsteps to create trompe l’oeil illusions. These are some of our favorite pieces from the last few months, but you can see plenty more on Facebook and in his 2013 book Lost & Unfounded: Street Art by David Zinn. All photos courtesy the artist. (via Street Art Utopia)

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