That drafty old barn where the University of Denver Pioneers pounded the puck for half a century has been replaced by beautiful Magness Arena in the new Ritchie Center for Sports and Wellness, a $70 million Italianate vision in Hansen sandstone, limestone and copper. Seating 6,200 for hockey, 7,200 for hoops and up to 8,000 for concerts, lighting and high style, thanks to architect Cab Childress of Denver's Davis Partnership. The hallmark of the Ritchie Center for Sports and Wellness, which also houses a second ice arena, a practice gym, a fitness center and a natatorium, is, of course, the soaring Carl B. Williams spire, finished in gold leaf.