If you are a student of the sciences, you are no doubt aware that many of the opportunities which are available to you are not in the United States. While we do have some wonderful curriculum options for you to ponder and choose from, we are far from the only game on planet Earth. Keep in mind that at different points in history, some of the other countries in the world were actually the very seats of scientific understanding. And while sometimes glory fades a lot, there are some other benefits which you can gain from your international studies. One of those benefits is a more global perspective, both on the sciences and on the world we all share.
Consider the fact that in some parts of the world, different scientific theories have held sway over the centuries. While there are very few people who still think that the Earth is flat (and most of those people are safely contained within padded walls), it is very important to understand that there is a great historical context which has led from the very first humans who asked why or how something is, and where our current scientific arts stand today. This has been a long road, and much of it has not played out in the United States, or even in this part of the world.
So when you want to learn where science came from (so that you can stand on the shoulders of giants and see all over the world), you want to learn in places which have been settled, studied and recorded about for thousands of years. Granted, any part of the world in which there were humans has been studied thoroughly, but the recordings are some of the most fascinating parts. You may end up having some personal insight which adds a whole new layer of understanding to what has come before.