As a child, I remember seeing Uruguay after most of South America. We had just gone through Argentina and Brazil, and then we saw this huge hydro-dam. It apparently supplies a big chunk of the county, and I just remember it being so clean. It wasn't quite as advanced as Brazil (I don't know why their traffic lights with a countdown aren't everywhere), but it seemed so nice and well thought out, if small. It was modest and well maintained... Not primitive in any way, clean and basic, but well cared for