I suppose it is possible that you could manage to avoid ever reading it, but it's pretty unlikely.
So, I ask again; in the US are you told up front on course if you have to take non-major classes and are these choices spelt out anywhere? i.e. If I applied for a Comp. Sci major am I going to be told 'btw, you'll have to take an English Lit. classes too' up front?
It's spelled out in the course catalog they send out when your application is accepted, and it's spelled out on the university and/or department websites (by law). It also constitutes a gross failure on the part of your college adviser if they didn't explain what a "liberal arts college" means, since that parlance is consistent across the US...
For my degree, you couldn't even sign up for classes without getting advised by a professor in the department, who would help you decide what to take. You would have to try very hard to be ignorant of the required courses. Many of the first courses you have to take are "General Education" classes like basic English, Math, and a lab science, regardless of your degree program. You then had to take 2 classes in your 3rd or 4th year from outside your "college," i.e. if you were in the College of Engineering you had to take the courses in Arts and Sciences, Education, or Business.
So for example, I was in Arts and Sciences (Geography major), and took Energy and Policy, taught by an engineering professor.
I think OP's mistake is in assuming that since Art History is boring, that all humanities courses are worthless to him.