Things to do?

Hi everyone, Im going to be interning in Seattle and living in the University District over the summer. Im also from a Big 10 school. I was looking for things to do in Seattle / UDistrict. All suggestions welcome! I like walking/hiking, all kinds of music, movies and going out. Im under 21 so can't go to the bars, unless yall have under 21 bars. Open to all kinds of suggestions!