Wow so it's down to the building level? I wonder how he did those and how accurate they are. Dimensions seems right on.

If you look at the video on his tiktok, the boroughs are divided into rectangles with clear shifts between the borders. For the boroughs at least, it seems like he repeated a style for a given rectangle and then switched to a different style for the next one. The result is more impressionistic, it doesn't seem to be accurate down to the building level.

It's possible his Manhattan is more accurate, I didn't try to check.