contours of tower cranes above the high constructing tower buildings against evening sky in the red sunset

action activity architecture beautiful black building buildings business city close clouds cluster constructing construction contour contours crane cranes development dwelling equipment evening exterior facade front high highrise hoist hoisting industrial industry machinery many modern multi multistorey multistoried multistories multistory office outdoors outline pink powerful process red silhouette silhouettes sky skyscraper skyscrapers storied strong sunset top tower towers twilight urban view windows