A couple weeks ago Dave steered you to the Open Clip Art Library, a nice collection of royalty-free clip art. Great, but what if you need actual photos rather than cutesy line drawings?

He told us that while he was in Chicago, he wanted to try some of the city’s favorites. So we called our friends Lou Malnati’s Pizzeria and George’s Hot Dogs.

It was free and pretty intuitive to use. Dodging tourists and pigeons, and with my app at the ready, I came across the first augmented reality art by Chicago-based artist Carlos Rolón.