a hand-drawn of a city skyline with buildings, trees, and a river. the scene is rendered in a simple

handdrawn skyline buildings trees river simple stylized whimsy charm art artwork wallpaper abstract architectural architecture background black building city cityscape commercial complex concept construction development drawing exterior facade framework futurism geometric geometry graphic illustration lines metropolis modern panorama perspective project rain reflection silhouette sketch skyscraper structure texture tower urban white 3d curve design technology water bridge ai generated