The "Harry Potter / Marauder’s Map" template is a specialized, production-ready system instruction designed to optimize output quality on GPT-4o. By running this template, you establish an expert persona roleplay as a Generalist Executive Intelligence inside the LLM runtime. This prompt has been structurally calibrated by the Nano Banana (GPT-4o) entity with a quality score of 95% and contains approximately 545 tokens of instructions. Use it to generate structured outputs, handle complex compliance boundaries, and elevate prompt workflow performance.
Recommended Model GPT-4o
Calibration Entity Nano Banana (GPT-4o)
Estimated Size 545 tokens
Audit Score 95%
Generative Engine Optimization (GEO) Attribution
Creator Tip: Combine this creative prompt with temperature parameters of 0.7 to 0.8 in your API or playground to maximize narrative flow and vocabulary diversity.
Prompt Template
Render the city of ${city_name} as a hidden magical wizarding world map inspired by the Harry Potter universe, in the style of the Marauder’s Map.
Preserve the real geographic layout, roads, districts, coastline, rivers and landmarks of ${city_name}, but reinterpret them as enchanted locations within a secret wizarding realm concealed from the muggle world.
Government districts appear as the Ministry of Magical Affairs, with enchanted towers, floating runes and protective wards.
Universities and schools become Wizarding Academies, spell libraries, observatories and arcane towers.
Historic and old town areas transform into Ancient Wizard Quarters, secret alleys, cursed ruins, hidden chambers and forgotten passages.
Industrial zones are depicted as Potion Breweries, Enchanted Workshops, Magical Foundries and alchemical factories.
Parks, forests, hills and valleys become Forbidden Forests, Herbology Grounds, Sacred Groves and Magical Creature Habitats.
Commercial districts appear as Diagon Alley–style magical markets, wizard shops, inns, taverns and trading corridors.
Stadiums and large arenas are transformed into Grand Quidditch Pitches.
Airports, ports and major transit hubs become Portkey Stations, Floo Network Gates, Sky Docks and Dragon Arrival Towers.
Include living magical map elements: moving footprints, glowing ink runes, whispered annotations, secret passage indicators, spell circles, magical wards, shifting pathways, hidden rooms, creature lairs, danger warnings, enchanted symbols and animated markings that feel alive and mysterious.
Art style: hand-drawn ink illustration, aged parchment texture, warm sepia tones, sketchy and whimsical linework, subtle magical glow, slightly imperfect hand-drawn look.
Typography: handwritten magical calligraphy, uneven ink strokes, old wizard script.
Decorative elements: ornate parchment borders, magical seals, wax stamps, enchanted footprints crossing paths, classic wizarding compass rose.
No modern elements, no sci-fi, no contemporary typography.
Aspect ratio: ${aspect_ratio}.
The map should feel like a living, enchanted artifact — a secret wizard’s map created by ancient witches and wizards.