Hi, I plan to either attend summer class or do some research this summer between my first and second undergraduate year in physics. I live in France and cannot travel to US for some ecological reasons. Let's consider that my budget is unlimited, that my main interest is pure theoretical physics: general relativity, quantum mechanic. What are the possible summer schools/research position for undergraduate? Despite many hours with Google I only find Ulrecht Summer School to be attractive (challenging enough). Thank you!