What would look better - doing a high-profile internship or going to Harvard Summer School?

The summer before I enter my senior year, I’m thinking of completing a high-profile internship or of going to Harvard Summer School for 7 weeks. I’m an international student and I want my chances of getting into an Ivy League university to be as high as possible.

What would look better on my university application - an internship or Harvard Summer School?

Do you want it to look better or actually be better?

I would say the internship since Harvard Summer School isn’t particularly hard to get into so long as you can afford to pay the tuition. It doesn’t indicate much besides your parents can afford to pay the tuition.

Internship, assuming you have a good role for learning/doing something.