The stairwell that outlived its building
Demolition took four floors and stopped. Thirty years later the stairs are still there.
The block came down in stages, and the contractor went under between the third stage and the fourth. What survived is a concrete stair tower standing alone in a car park, fenced, structurally sound, owned by nobody who will admit to it.
It has become a landmark in the way unplanned things do. People give directions by it. A market stall sets up in its shadow because the shade is reliable. Two separate proposals to remove it have failed on cost.
The interesting part is not that it stands. It is that the neighbourhood has quietly written it into daily use, and would now object to its removal on grounds that have nothing to do with architecture.