These are mostly found in Kathmandu, Nepal and are studied under the “Traditional Newari Architecture”, even though the architecture itself is not limited within the Newari community (native to Kathmandu valley).
The projecting window is called “Ga-jhya” which normally has a bench occupying the projection inside, where people can sit and look down at the views of the street. The other windows are called “Tiki-jhya” for their latticework. What’s really interesting is that these windows rarely have any nails or screws to hold each other, they all are interlocked in place through their intricate ties and knots- a very skillful craftsmanship, I am always amazed.
Plus another quick fact, Newari Architecture requires you to have different types/size of windows in each floor level, so if you ever found these buildings again you can notice that the windows on each level would look different.
Edit: “Jhya” in Newari, closely followed by “Jhyal” in Nepali means windows.