Over the next few weeks, travelers passing through Denver International Airport might instead find themselves at the doghouse. Sixteen deluxe doghouses — complete with solar panels, heated floors, filtered-water systems and other amenities for pampered pooches — are on display through Oct. 9 as part of the Sustainable BARKitecture Doghouse Competition. Fifteen of the structures were designed and built by local firms and are on display on the plaza between the Westin hotel and Jeppesen Terminal, just steps away from the commuter rail station.