Additional note, I was just talking to a friend in Austria about how much he uses his A/C (almost never, they open a window) and thought about all the places I'

Additional note, I was just talking to a friend in Austria about how much he uses his A/C (almost never, they open a window) and thought about all the places I've stayed and worked in while working over there. I can't actually remember when I stayed in a place that needed but didn't have A/C, and this included centuries-old buildings where they'd somehow been retrofitted through thick stone walls, in at least one case dating to the late Roman empire period. These were all in cities, perhaps it's different in more rural areas.