It's a little embarrassing to show you how very dirty my windows were. But with the emphasis on were, I guess it's OK. (And they didn't look quite as dirty as the close-up below appears) The dining room originally had two tall, narrow windows. You can see the brick arches where they were. But someone replaced them with a big picture window flanked by two thinner ones that open. That's much nicer, I think.
They're double-paned, anti-UV windows. Traco brand, which the inspector said was good.
I'm not fond of washing windows. Who is? Everyone has different ideas about how to do it. Mom swears by cornstarch in hot water, and newspapers. I use Windex and microfiber cloths. Seems to work OK.