Are there fields of law that work internationally? location: not applicable

Hi, i’m not sure if this is the place to ask this question. I’m a highschool student trying to figure out career options. I love travelling internationally but i’m also interested in law. Law tends to be tied to specific countries, but I was wondering if there are lawyer jobs/fields that require/encourage international travel for work. If so, what are they, how do you get involved in them, and what do they entail?