arc
arch
architecture
background
blue
building exterior
built structure
city
cityscape
commercial
downtown
downtown district
dusk
famous
famous place
gateway
gateway arch
gateway to the west
green
illuminated
landmark
memorial
metal
metropolitan
midwest
midwest usa
missouri
monument
nobody
north america
old
panoramic
reflection
sky
st louis
structure
sunset
travel
travel destinations
twilight
urban
urban scene
usa
water
waterfront