International Space University
Based in Strasbourg, France, the International Space University has been training "the future leaders of the emerging global space community" since 1987. This makes it a great place to go for graduate-level education in Space Studies, or to get a space-related MBA. One downside: things might be difficult for you if you enroll at ISU and then decide that you want to switch your major to painting or archeology.
ISU helps to sponsor the annual student-run SpaceVision conference, despite said conference's current rather America-centric focus.