Now, this is a huge wall, which spans most of a building. It's by Blu– (Streetfiles Archive), who has already brought me much photographic joy with other works of his, which the link above will take you to.
This wall is also in an awkward location from a photographic point of view. Short of climbing onto the roof of the building opposite, there was no way to capture it all in one take.
So, enlisting the help of my father, who has done more stitches than I care to think of (see this for an example), we set out to create a more complete view of this particular wall. It goes something like this:
I still consider this as something of a work in progress, but we're getting there.