Conceived and funded in a time when Denver did not stare at cavernous debt, the freshly opened Stapleton rec center is as shiny and opulent as the brownstones across the street from it. By far the largest center in the system, Central Park offers a kid-friendly pool replete with lazy river and water slide; a tech-laden cardio room overlooking the park; a spacious, thorough weight room; and a slew of comparable trappings. Among them are a daycare center, a lounge area, a giant LED chandelier and a bench that knows where you're sitting and displays speech bubbles above your head.