I know, I know, airports aren't the sexiest place ever, and I've been in my fair share. On our way back to Des Moines from Hartford, Conn. we had a nearly three-hour layover in Detroit. I wasn't expecting much. In fact, I didn't even have thoughts about the airport. Once we landed though, I quickly noticed the tram above our heads. Yes, a tram runs up and down Terminal A like a model train runs on an elevated track around a bedroom. Well, we had to get to Terminal B so no tram ride for us but that's OK. Instead we got to go through this trippy, color-changing underground tunnel. I caught a picture of it while it was blue, but it turns every shade of color with some coordinating background music. If you weren't smiling before entering the tunnel, by the time you exit, you will be. I literally went from annoyed, busy traveler, to a little