Just back from a quick visit to the UK, and, as a Brit, I have to say that I just love the fact that everything smells right, and that the birds you can hear are the right birds. I realise this won't apply to Americans, though, for whom the exact opposite would be the case. Still, it's something I really noticed.
I also love the fact that anywhere I was driving, even if I was on a fairly major A-road or motorway, I had the sense that I could pull off anywhere and find myself in some interesting and pretty little village or historic spot or footpath or place of great natural beauty or some woods full of bluebells or...just...something. Here in the US Midwest, I realyl have a sense of myself as being surrounded by miles and miles and hours and hours of nothing. I drove down from Chicago for nearly three hours, and completely never got that same sense that there were all kinds of interesting little places lurking just down the off-ramp. At best I would probably find a Taco Bell, a McDonalds, a Subway, and a few gas stations.