Most of the US population centers (which is different than where most people live) are an ugly stroad. Obviously there's natural beauty, and the US national parks program and the national forest service are amazing at preserving this, but most of the built US is ugly, by area.
Most of the beautiful places in the US are either places nobody lives, or Northeastern cities (and mostly rich parts, even if the ugly parts aren't due to car dependency.) Now, the US isn't densely populated, so "places nobody lives" is a lot. But there's still a problem when so much of the built environment is ugly