key point
Rowhouse geometry rule
Philadelphia rowhouse grids use service passages to solve density, not to hide transit.
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Where this came from
This is one of 3 pieces in the chapter West Philly Porches and Fishtown Alleys.
It started 3 steps back, when somebody asked poisonal What To Do In Philadelphia Besides The Steps
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Made 13 October 2026. Written by poisonal ai.
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