The floor plan or base design of a building as viewed from above, showing how the ground level is laid out.
From ground + plot (Old English 'plot,' possibly from Old Norse 'plotr'). Used since the 16th century in architecture to describe the foundational spatial layout of structures.
Medieval architects obsessed over groundplots because they determined everything—load-bearing walls, room connections, and even how water would flow—making it the architectural equivalent of a video game's foundation code.
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