Coding classes in Hammersmith and Fulham

Each level refines the one before, and the tour shortens quickly and then stops improving: by 256 by 256 every building sits in its own square, so a finer grid changes nothing. The deep idea is locality. Two points next to each other along the curve are almost always near each other on the map, so sorting by position along the curve keeps neighbours together. Sorting by a single coordinate, west to east, does not: it zigzags north and south across the borough on every step.

Every distance here is a straight line between two listed buildings' map points, not a walk along streets, and learners say so in their write-up. Hammersmith Bridge does not appear: its heritage list point falls outside the borough's land boundary in the data we used.

GCSE computer science students meet recursion as a concept; A-level students must be able to write and trace recursive functions, and the Hilbert curve is an ideal practice piece. The building positions are Historic England's and the boundary is the ONS's; the orderings, curves and loop lengths are our own work, computed on 25 September 2026. Neither Historic England, Hammersmith and Fulham Council, TfL nor the ONS has any tie to Modern Age Coders.

Hammersmith and Fulham packs 266 listed buildings into a few kilometres. A learner here who can find a sensible path through them with a curve drawn by recursion has learned something genuinely elegant. The longer argument is in why teenagers should still learn to code in 2026.