Could you give me a summary of the differences? Thanks
EDIT: Yeah I'm doing a year abroad, not moving to America, as much as I'd love to.
I studied in Spain (Escuela Universitaria Cardenal Cisneros - Alcala de Henares) and France (Audencia: École de Management) and observed that these schools and many others I had found seemed to be maybe one or two buildings that catered towards a more specific field. In North America, it's much more typical for a University to cater towards a variety of majors. Thus, student populations are much more immense. At my home school, Bowling Green State University, there are ~17,000 students right now which isn't even a huge amount but shows how a small town in the middle of nowhere can attract alot of students. The actual size of the universities in the US is often akin to a small city. I think BGSU had ~15-20 buildings including a two storied (and basement) rec centre, huge hockey building, basketball stadium, football field, baseball field, etc....)
Some differences in the students; Americans are often much more non chalant and less concerned with appearances and grades. I don't mean this as a slam for it's often truth. It's widely accepted for students to come wearing pajamas like they rolled out of bed or in gym clothes. Quite a long shot from in France where mes camarades de class français would often where business casual to dressy. Many of the teachers I've had in the US were very laid back and willing to adjust the curriculum if students complained while in Europe, students accepted the schedule as it was and didn't complain.
Personally I'm glad to have experienced both. I prefer the culture and professionalism of the European universities as well as the smaller student body but I liked the size, resources, and friendliness/helpfulness of staff in American colleges.