The largest 3-D street art ad ever by Reebok.

(click images, via)
In London, for the new CrossFit trainer. Artists last week created the largest piece of 3-D street art ever (over 1,000 square meters), garnering Reebok not one but two Guinness world records. I don't like 3-D street art, but it's kinda cool looking, I guess. Compare it to the Guinness-confirmed smallest ad ever—100 microns—etched on a whisker by Gillette. Previous street ads:
• Mercedes-Benz • New Zealand police • Smart car • and Jontex condoms.