Interesting post @leaky20. It is really amazing to see how many different forms of windows out there. I believe it is intuitive to think of as much variance of windows exist as there are diverse world view of people, if we consider the windows are the gates for people to look out to the world.
Yes there are so many cool windows - at least in Europe. In Canada they tend to be very generic and all very much the same. But in Europe each country is very unique in their designs