I'm interested in most places with interesting architecture or culture. I travel very infrequently, and when I do it's just work trips. Only real tourist trip I ever took was to London, and even that was amazing.
I'd love to go to china, just to get my hands on some yixing ware and old tea books (not to mention tea in itself). London was a complete disappointment when it comes to tea.
I wouldn't miss out on the environment either. Especially the glass bridge.
Other than that, India would be interesting because of their music culture. There aren't a lot of indian music teachers in Sweden, so getting there is pretty much a requirement if you want to learn about indian music.