Guimard Cast Iron Canopy (Style-Only, Image-Conditioned)
Style register: Hector Guimard's Paris metro entrances, cast-iron vegetal uprights, green enamel, amber glass, and graceful structure designed for public passage.

The prompt
Re-render this image as though its visible forms were shaped by Hector Guimard's circa-1900 cast-iron metro entrance design. Retain the original subject, setting, and camera angle. Give strong structural edges the weight of molded iron: a narrow central rib that forks into smooth, upward-sweeping stem curves, with small leaf-shaped gussets where the material joins. Treat flat planes as green enamel with worn high points exposing dark iron beneath. If the source offers glass or bright empty space, render it as amber-tinted panes with simple iron dividers; otherwise keep its original surface readable rather than inventing windows. Background margins can hold one or two arching iron profiles that echo the subject's dominant curve, never a new doorway that moves the subject. Show seams from separately cast pieces, shallow mold lines, riveted joints, and a few rain-softened streaks. The palette is verdigris green, dark olive, charcoal iron, warm amber, and pale overcast light. Make the silhouettes thick enough to read at thumbnail scale, while keeping tiny hardware secondary. This is human-scale public infrastructure, sturdy and welcoming rather than a fantasy vine engulfing a scene. Leave a calm, uncluttered band of negative space along the top or bottom edge where a title could sit. Strictly no on-canvas text, no legible lettering, no signature, no watermark, no logos. Preserve the subject, pose, and composition of the source image exactly, change only the medium and rendering. Aspect ratio matches source.
What it is doing
The entrance is a promise that public space can feel designed for a person rather than a machine. A hard metal process can still make a threshold feel generous when its joints and curves are legible.
Tuning knobs
- Iron profile: `branching upright rib` (signature) vs `low sweeping arch` vs `paired narrow stems`
- Enamel: `worn green gloss` (signature) vs `matte olive` vs `deep bottle green`
- Pane light: `soft amber` (signature) vs `pale milky glass` vs `cool daylight`
- Joint detail: `cast seams and rivets` (signature) vs `almost seamless casting` vs `pronounced joining plates`
Related prompts
See all 10 prompts in the Art-Nouveau grammar · Open in the gallery
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