The original plan for the 2013 Biennial of the Americas called for downtown to be turned into one big art fair. That didn't happen, but we did benefit from the brilliant "Mine Pavilion," a timber tower designed by the Chilean architectural firm of Pezo von Ellrichshausen. The multi-story piece, which emerged from the median at Speer Boulevard and Larimer Street, was a skeletal tower with periodic set-backs as it rose to the sky. Made from Colorado beetle-kill wood set on a base of broken local stone, "Mine Pavilion" functioned as a visual link between downtown and Auraria, a goal that has eluded Denver since the '70s.