a smooth curve of the channel of the colorado rive, arizona, autumn, blue, boat, building, california, castle, chicago, city hall, clouds, coast, colorado, crystal mill, england, forest, fortress, glen canyon, golden gate bridge, great britain, hills, horseshoe, horseshoe bend, house, illinois, lake, lake shore drive, light, lighting, lights, london, michigan, morning, mountain, national park, night, of the field, panorama, people, rays, reflection, river, rock, rugs, salt marshes, san francisco, scotland, sea, sierra nevada, sky, skyscraper, snow, square wave, steptoe butte state park, stones, summer, sun, sunset, swimsuit, thames, tower bridge, town, tree, united kingdom, united states, valley of death, water, waterfall, yosemite, yosemite national park