I always wondered why the Gateway Arch gets less respect. Look how often other landmarks like the Statue of Liberty, Eiffel Tower, Golden Gate Bridge, etc. get copied or become iconic images. Not the St Louis arch. I sense (though have no data) that it was a lot more 'popular' back in the 60's and 70's. Now you just never seem to hear about it.
I've tried to find the history of this arch, but there is next to nothing about it online. A discussion forum I found only confirms that it has been there for decades.
Art - Misc 
Poor arch. :(