A common mistake is distorted, vertical lines because of the camera's viewing angle. If the target of the camera is placed a bit higher or lower than the camera itself, we see vertical lines becoming distorted. If you are aware of this, you can use this as a design element and it can give good results. But most of the time, these lines create unwanted triangles near the edges of triangles. Professional architectural photographers use expensive lenses to correct this distortion. We can also use camera correction modifiers in our software packages.
In this example, again I tried to create a dark frame around a well-lit street, and gave a wall some interesting balconies. The light and dark coloured stone, which carries the ribbed vault, also emphasises this framing effect. Actually, here, I created a "picture in picture" effect. (Fig.09a)
Another common problem is to decide on the direction of the framing: vertical or horizontal? In the silhouette example, framing was horizontal because of the horizontal lines. In the Ortakoy photograph, framing was vertical because of the vertical composition. Actually, minarets of the mosque and large carriers of the bridge created vertical lines.
In this example, we see long vertical lines which catch the viewer's eyes and carries them to the inner surface of the vault, where we can see nice decoration elements. Actually that is not the focus point of the composition. That is a secondary element, but it helps the vertical framing. (Fig.09b)
I think there is also something missing there. In the focus point, the lower, left point according to the 1/3 rule, I think it needs a subject there. It can be a figure or figures. This will bring life to this silent, vaulted street. These figures can be a donkey carrying something and its owner. Maybe children running after the donkey and playing and laughing to it, and maybe a child sitting on the stairs watching them. Yes, figures always give life to a composition. (Fig.09c)