Everyone has different tastes and preferences so I don't think it can be listed to specific countries. I have been in Canada, USA & Mexico and there are beautiful women everywhere. It depends on your individual tastes. I also think personalities influence this as well, that can change based on country for sure. For example I really like Mexican women, not because they are Mexican (looks) but because of how they are. To me, they don't seem as influenced by the media and they just seem "real", genuine I guess. They don't pretend to be something they're not or care so much about what others think. At least in my experience anyway.
The Czech Republic/Ukraine Brazil/Mexico Is it cheating if I pick my own country? I mean. Pretty much a lot of variety, so anything you can find in the world, you can find in the U. S. Not the greatest overall, given how much of the population is overweight. But definitely a lot of top tier. Then I'll throw China/Japan in for 4th.
There's no thinking involved in who you find attractive. They either are or they're not. Most of the women I've been super wowed by have been Ukraine or Czech. I typically like light skin and light eyes. Though, I can also dig the olive. I mean. It's hard to really pick one single country. Like the ones I couldn't pick between, both have really similar genes. So, I'm more picking the genes than the nation.
Beauty is subjective. I just wanted to put that out there before i stated my personal opinion (yes OPINION).
I am most attracted to white women with pail skin, brown hair, and preferably colored eyes. Therefore my choices are limited to the U. S. Canada, and Europe.
People who live in northern countries tend to have pail skin (which i like), but they also tend to have blonde hair rather than brown hair. Also, the women in countries like Germany, Sweden, and Switzerland are probably way too tall for me (I'm only 5'6).
Due to all of this, I'd probably be most likely to find my "type" of women in semi-northern European countries such as France, The U. K., and Poland.