The Colfax character comes from its people, events, and classic architecture. Many of the buildings along Colfax are protected through historic designations or within historic districts. These historic buildings are part of the attraction to Colfax we want to maintain. Historic Preservation Resources: Historic Landmarks & DistrictsExplore Denver's historic landmarks and districts. Colfax HistoryLearn more about the historic buildings near Colfax from Capitol Hill United Neighborhoods' (CHUN) Historic Preservation Committee. Historic Landmarks & DistrictsAs one of the nation’s premier non-profit urban historic preservation organizations, Historic Denver, Inc. works to protect and promote Denver’s historic places.