There's definitely going to be cultural differences since Grand Rapids is in west Michigan and not eastern Germany. The food's decent, and there are a few art festivals, museums, venues and arenas. Lansing is an hour away which has more of the same. Holland is a little closer and on Lake Michigan. Chicago is only a couple hours away if you're yearning for the big city. I can't speak much about the night life but last I knew we had multiple bars and clubs if that's your thing. The only public transportation is the Rapid (bus system).
