You could spend days scouting the dozens of commercial galleries in Broward and Palm Beach counties for that perfect piece of art, or you could do one-stop shopping at Gallery Center. This 30,000-square-foot complex is more like a museum than an art mart, with a small outdoor sculpture garden that draws you into the building, a sprawling, airy complex where you can wander among eight galleries under one roof. The art, all for sale, is mostly contemporary, although the works of such art-world trendoids as Mark Kostabi, Julian Schnabel, and David Salle are conspicuous only by their welcome absence. Instead there's a far-ranging selection of photography, sculpture, glassware, and oil, acrylic, and watercolor painting, including works by major artists. You might stumble across a Pousette-Dart or a Botero canvas, for instance, and the breathtaking glasswork of Dale Chihuly is a staple. There's first-class art for as little as a couple hundred dollars or as much as a quarter of a million. In other words, don't go there looking for something to match the sofa.