“ The primary factor is proportions. ”
If a building becomes architecture, then it is art.
~ Arne Jacobsen
I don't see that any buildings should be excluded from the term architecture, as long as they are done properly.
Proportions are what makes the old Greek temples classic in their beauty. They are like huge blocks, from which the air has been literally hewn out between the columns.
And when an architect has designed a house with large windows, which is a necessity today in order to pull the daylight into these very deep houses, then curtains come to play a big role in architecture.