Keywords
arch, architecture, astronomy, blue sky, botany, central europe, clock, color, day, distance, equipment, europe, geography, germany, grass, halde hoheward – der landschaftspark, horizontal, horizontobservatorium, landmark, landscape, meadow, measuring device, natural science, nobody, north rhine-westphalia, obelisk, object, outdoor, photograph, pillar, place, planetarium, plant, plateau, recklinghausen, route of industrial heritage, ruhr area, science, sky, structure, sundial, travel, way, western europe, western germany, stock image, images, royalty free photo, stock photos, stock photograph, stock photographs, picture, pictures, graphic, graphics, fine art prints, print, poster, posters, mural, wall murals, 3503310