The Smithsonian Latino Center’s Kids Corner is a virtual museum of Latino culture, including Mesoamerican art & culture and Latin musical instruments. There’s quite a variety of exhibits, including interactives.
It’s probably only accessible to high Intermediate or Advanced English Language Learners. We study a unit on Latin Studies in my mainstream ninth grade English class, so I’ve placed the link on my website in the section with other sites related to that thematic unit. It’s called, appropriately enough, Latin Studies.