A cross-section illustration reveals the happenings of Kowloon Walled City
thisiscolossal.comA really good documentary (in German, but you'll get the drift) with lots of casual, non-sensational footage: https://www.youtube.com/watch?v=S-rj8m7Ssow
A bit gauche that “the full panorama” link hotlinks the CDN of a dead social media site (cohost) without citation. Far more information about the print can be found in the corresponding post there: https://cohost.org/belarius/post/6677850-architectural-cross.
Also relevant, as you alluded to, cohost is now read-only and will be shutting down at the end of 2024.
Having this in a Google Maps-esque interface with the ability for users to annotate and comment on any point would be interesting.
Another creative idea would be to have a story mode, i.e. snapshots of this cross-section at the next hour/day/evening/etc.. It'd be like a comic strip but on each panel there'll be 5000 stories to follow up from the previous one.
Hah, now I'm thinking about the world as such a comic strip.
too bad that with this having been knocked down in the early 90's, there won't be any 3D scan of the thing...