Before going abroad and discovering the unknown, I've created a list of things to see in each country, so that I wouldn't regret missing out on something after I came back home. For my layovers in Zurich and Frankfurt, I knew I had limited time so that list of things is pretty short.
In Zurich I was set out to:
1) Try their Swiss chocolate (Sprüngli, the mother of Lindt! and Teuscher)
2) Visit Cafe Odeon, which was at some point visited by Einstein and Lenin!
3) Walk along the Bahnofplatz, shopping street
Not only did I do everything on that small but curious list, I also got to see the locals on their lunch, enjoying sunshine while sitting on harbour front and looking at the alps.