Go to Liechtenstein! I've been to Zurich a few times (company HQ there) and it's a lovely city but IMO isn't as full of colorful history as, say, Budapest or London. I'm one of those people who likes to "collect" countries, so when I ended up in Zurich on a weekend I took the train, which goes as far as Sargans on the border, then took a bus into Vaduz. Buses go straight from the train station frequently and they're a bilious green- you can't miss them. Best done on a clear day so you can see the Alps on your train trip.