Not until they fell really. Perhaps because they were too modern and the Empire State building had a firm grip as a New York icon due to its grand style. Most everyone thought the towers as being too bland in style and just tall office style buildings until they were attacked. Yes they were there as a big part of the skyline but didn’t dominant culturally. Now of course the are considered sacred.
Pink’s?
The Alamo.
No love for monument valley?
The OP asked the question of non-Americans. The thread now seems to consist mostly of Americans saying what they think our iconic landmarks ought to be.
The Cake is a lie.
Well, our most noticeable landscape feature is our self-obsession, right? 