It’s a busy day inside the McWane Science Center downtown. Kids play around a brightly colored Rube Goldberg machine in the center’s pristine lobby. But look out the window across Second Avenue North, and there's something very different: the eight-story building that once housed the Pizitz department store, closed now for almost 30 years. Windows are missing, and the façade shows 92 years’ worth of cracks and stains. You’ll also see construction crews working to rejuvenate the building.