This street appears to neck down in two steps, quite close to one another. In fact, however, one of the steps is actually a jog, as it is matched by a step on the opposite side of the street that serves to maintain the street's width. This effect is highly satisfactory and comes close to fully enclosing the space.
It also appears that the street opens on the left side, as we see the end of one building without any further buildings on that side, although we can see from the shadow that another building is present, farther back from the centerline of the street.
The building at an angle in the foreground is the Catholic cathedral. The street actually curves at this point, which is why the cathedral is not aligned with the rest of the street.
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