email, phone call interview, and in person interview at the office. All pretty standard. Because it was for an unpaid position in mexico city, and unpaid internships are much less popular there than in, say, Canada or the United States, there didn't seem to be a really harsh competition, even though it was a really interesting job.

Skill based interview with 3 interviewers. Asking specfic skill based questions of how you responded to situations, to go deeper from your application answears, to share details of how you have gained skills and would contribute to a team, and why you wish to work in this department specifically