Urban cityscapes, buildings or structures, crowds of people, vehicles or roads, man-made objects, signs of human activity, cloudy or overcast skies, rainy or stormy weather, unnatural or artificial elements, dull or muted colors, cluttered or chaotic scenes, a sense of tension or unease, industrial or urban elements, harsh or unflattering lighting, low-resolution or pixelated details, flat or two-dimensional appearance, a sense of monotony or repetition, mundane or ordinary scenes.