When an old Western Union office building in downtown Jacksonville was renovated into a six-floor art museum in the early part of the 21st century, no one knew quite what to do with the walls of the central staircase, which rise 40 feet above the lobby. Enter Marcelle Polednik. Polednik, now director of the Milwaukee Art Museum in Wisconsin, was hired as director of the Museum of Contemporary Art Jacksonville in early 2006 and immediately started thinking about what she could do with those big white walls. "What made this one unique from my perspective was the staircases going up, the visi...