The image shows a decorative wall painting depicting a bouquet of roses with the number 4. This is not an architectural element in the strict sense, but rather an artistic decoration on the wall surface. The painting is executed in a simple manner: a bouquet of red roses with green leaves, wrapped in a white ribbon that displays a red number 4.
This image is likely an element of navigation or a decorative indicator within a building, possibly marking an apartment number, floor, or room. The painting is applied directly onto a beige plastered wall, which is characteristic of traditional interior decoration in some countries.
From an architectural critic's perspective, such decorative elements are secondary to the structural features of the building, however, they may reflect stylistic preferences of a particular era or regional traditions in residential space design.