44 4 0Download size Original (5158 x 3434) Large (1920 x 1278) Medium (1280 x 852) Small (640 x 426) Low-angle Photo of Four High-rise Curtain Wall Buildings Under White Clouds and Blue Sky architectural designarchitecturebuildingscitycityscapecloudsconstructiondowntownexteriorfuturisticglass itemslow angle shotmodernofficeperspectivereflectionskyskylineskyscrapersteelstructuretalltechnologyurbanwindow