The house was designed to keep out the sun in summer, and let it in in winter. The roof projects four feet at the front (south) and that works really well to shade the second floor windows.
Four the first floor there is a porch structure in front of the large living room windows. This is open to the sky and by itself is more architectural than functional. Finally towards the end of Summer I installed an awning to provide shade; this works really well and keeps most of the sun off the windows. It fits in with the general color scheme, and completes the “porch” look.
Now that Summer is over, I have taken it off again, and the porch is once again open. Sun coming into the front room in the morning really does seem to help heat the house.