Ключевые слова: america, beauty, blue, blue hour, buildings, city park, colorado, denver, denver museum of nature and science, denver zoo, destination, exercise, frosted, frozen, glow, historical monument, horizon, ice, jogging, lake, lake scene, light, morning, mountain, mountains, park, picnic, pink, serene, skyline, structure, sunrise, tennis, tourist, trails, travel, tree, vacation, walking, winter,