On the eve of Presidents' Day weekend, guests climbed the stairs to Zone 4 Architects' top floor office in the heart of downtown Aspen to celebrate the firm's 19th anniversary. Light bites from Mawa's Kitchen delighted all as the office filled and peopled mingled, sipping on wine and beer. Founded in 2001 by Bill Pollock and Dylan Johns, Zone 4 is a boutique architecture firm specializing in modern and traditional mountain architecture.