The original note, as written at the time
A perimeter wall with a thin neck and high suspended planters particularly of circular design.
Ongoing development
We spend enormous effort on the front of a building and almost none on the line that actually meets the street. The elevation is a presentation; the perimeter wall is a negotiation. It is the first thing the city asks of you and the last thing anyone designs properly, and it is where most of the honesty in a project either survives or quietly dies.
I have been looking at walls that do a second job. A thin neck of structure, kept deliberately slender so that it reads as a single gesture rather than a fortification, and then planters suspended high along its length — circular, generous, held out from the face rather than sitting on top of it. The wall stops being a boundary and becomes a horizontal garden with a structural reason to exist. The planting is not decoration applied afterwards. It is the reason the geometry is shaped the way it is.
There is a practical argument, which is that a suspended planter with a circular section sheds water predictably, holds root volume on a shallow profile, and throws a shadow that moves across the wall through the day so the surface never reads as flat. There is also a less practical argument, which is that a wall which is growing something is much harder to treat as a violent threshold. A person walking past a high line of green does not feel they are passing a perimeter. They feel they are passing a garden that happens to have a wall underneath it.
But a wall is never only a wall, and I want to be honest about what it usually is. It is the line where the household decides it is inside and the neighbourhood is outside, and in a city where the police are not always coming, that line is doing security work that no drawing can fully account for. The thin neck is my attempt at a compromise. It remains a line. It remains climbable in principle. But it is not aggressive, and the aggression is precisely the part that gets copied and multiplied until the whole street is a row of fortified slabs daring each other.
What I am after is a perimeter that can be read from the road as an investment in the street rather than a withdrawal from it. Planters cost money and require maintenance and die in drought, and all of that is the point — they commit the owner to a relationship with the outside. You cannot put a suspended garden on a wall and then behave as though nothing beyond the wall exists. The garden is on the outside. It belongs to the street in the only sense that matters, which is that the street can see it.
And the wall is a better teacher than the gate. You cannot guard the gate forever. The city is going to arrive at your boundary whether you like it or not, and the only durable way to protect what is inside is to make the people outside believe the boundary is worth respecting. That is not achieved with a higher wall or a sharper detail. It is achieved when the perimeter is visibly doing something for everybody who passes it, so that the ordinary pressure to knock it down is replaced by an ordinary preference to leave it standing.
None of this is a solution to insecurity. It is a way of building that does not make insecurity worse, and given how much of our perimeter architecture is currently making it worse, I think that is worth designing carefully rather than leaving to whoever the contractor sends on the last day.