The truth is that I had never noticed these details, but now that I remember, I do remember having seen them in some houses in the colonial area of my state and I agree with you that they give a lot of character to the house where they are placed.

On the other hand, I think that currently this would not be used because both architecture and design in general, have taken a more minimalist path, is my perception, however I think there are things that should be rescued.