The Greater Chicago Food Depository has kicked off this year's CANstruction, an event that tasks local architects, engineers, and construction companies with using canned goods to create the coolest sculpture they can muster. The best part, aside from all the "can" pun opportunities, is that all canned goods used in the construction are donated to the food bank, meaning the event does some serious giving back. In fact, last year's can-petition raised almost 96,000 pounds of food for the Chicago community, a number that shouldn't be taken for CAN-ted (we had to!).The sculpture exhibition is now open for public viewing through the end of the month, so head down to the Merchandise Mart to check them out, and to take advantage of some seriously awesome photo opps. We've also nabbed a first-look at some of the most clever designs, so take a peek through the slideshow to get an idea of what you're in for.