Some of the unique items available at the Depot at Gibson Mill, an antique and designer mall that was once a mill, located in Concord, N.C. With 85,000 square feet and 460 booths, the antique mall is one of the largest antique and designer mall in the South..Once a part of the old Cannon Mills, the charm of the 20 foot ceilings, wide wooden floors and exposed brick remains. Photo is part of a photographic series of images featuring Concord, NC, by Charlotte-based photographer Patrick Schneider..