These are not really porches, of course, but two café doorways and a storefront.
They caught my eye while we were walking around the Sainte-Catherine or Sint Katelijne neighborhood of Brussels, which is just northwest of the Grand’Place and La Bourse.
The one pictured above is on Rue de Flandre.
I believe I snapped this blue café, above, on Quai au Bois à Brûler, facing the site of the old Saint-Catherine Bassin or canal port, covered over since the 1870s.
I like the way the ivy is used as both a decorative windowbox planting and low privacy screen.
Above, a mass of vines shades a closed storefront, also along Rue de Flandre.

Rue de Flandre is a good street on which to find an interesting restaurant. We liked Viva M’Boma (old-fashioned Belgian food, emphasis on meat/offal) and Domaine de Lintillac (dishes from the southwest of France, emphasis on duck).
Click on any photo above to enlarge it.