# GPT Image Hub prompt

## Fifteenth Century Antique Portolan Chart
- URL: https://www.gptimagehub.com/library/fifteenth-century-antique-portolan-chart
- Generator URL: https://www.gptimagehub.com/generate?promptId=oss-ym-g2-22149
- Markdown URL: https://www.gptimagehub.com/api/agent/markdown?path=%2Flibrary%2Ffifteenth-century-antique-portolan-chart
- Category: Poster & Illustration
- Model: gpt-image-2-5-sunburst
- Aspect ratio: 1:1
- Style: illustration
- Tags: portolan chart, antique map, cartography, nautical, medieval, vellum
- Updated: 2026-10-26T15:48:13.098Z
- Created: 2026-10-26T15:48:13.098Z

This prompt creates an authentic medieval portolan chart on weathered vellum with classic cartographic details. Replace the bracketed region to map any sea, coastline, or imaginary world.

### Full prompt
```text
An antique 15th-century style portolan chart of [the Mediterranean Sea], illustrated on aged parchment vellum. A dense navigational network of red, black, and gold rhumb lines radiates across the map. Features hand-lettered Latin coastal names, miniature caravel ships sailing the waters, mythical sea monsters, an ornate compass rose cartouche, and an elaborate gothic title scroll.
```