City, Architecture, Skyscraper, Arch, Blue, Building Exterior, Built Structure, City Life, Cityscape, Dusk, Famous Place, Gateway Arch, Horizontal, Illinois, Illuminated, Midwest USA, Mississippi River, Missouri, No People, Outdoors, Photography, Purple, Reflection, River, St. Louis, Street Light, Sunset, Travel Destinations, USA, Urban Skyline, Waterfront, stream, united states, direction, cityscape, city district, sundown, demonstration, blue, nightfall, district, purple, arch, outside, illinois, state, United States of America, America, outdoors, photography, american state, dusk, U.S., United States, waterfront, horizontal, twilight, reflection, north american country, sunset, missouri, river, expression