Mission 66 architecture today ID: 2181 | This file appears in: Zion Human History Museum at Zion National Park The large glass entryways and flat roofing are signature aspects of Mission 66 design. | Creator: Don Graham | Source: "Visitors Center, Zion NP." Don Graham, August 28, 2007. Wikimedia Commons (CC BY-SA 2.0). https://commons.wikimedia.org/wiki/File:Visitors_Center,_Zion_NP_8-07_(20227476352).jpg. Download Original File CreatorDon GrahamSource"Visitors Center, Zion NP." Don Graham, August 28, 2007. Wikimedia Commons (CC BY-SA 2.0). https://commons.wikimedia.org/wiki/File:Visitors_Center,_Zion_NP_8-07_(20227476352).jpg. "Mission 66 architecture today" appears in: Zion Human History Museum at Zion National Park