How do I show this on my application?

Hi. I have a HUGE passion for learning languages and immersing myself in other cultures. I’ve been to places like nicaragua, Puerto Rico, Vietnam, Japan, China, Caribbean islands. How do I show this passion on my application?

Just traveling isn’t really an EC. Colleges usually see that as coming from a family with the resources to support that travel, but not something you earned/worked hard at. You could have an activity called something like “Independent Foreign Language Study”, and list them. You could find a way to work a story about one of your travels into an essay. If you did some kind of service trip or study abroad courses, those could be listed as activities.