Map API

One model, available through an API

Everything shown in Phersu Atlas, from the borders of around 8,000 polities across 5,500 years to their capitals, cities, battles, sieges and territorial changes, is derived from a single continuous historical model. The Map API makes that model available outside the atlas, allowing it to be integrated into web applications, GIS software, research workflows and digital publications.

What you get

• Available dates — a collection of fixed dates, always 1 January: every century from 3400 BC to 1900 AD, then every year through the 20th and 21st centuries.
• Geometries and tiles — polity boundaries and the historical coastline, ready to render in your own styles.
• Objects — polities with their rulers and metadata, capitals, cities, battles and territorial changes.
• Consistency — because every answer comes from the same model, maps of different dates can be compared without redrawing.

Who it is for

• Developers building historical, educational or geopolitical applications.
• Researchers who need reproducible historical boundaries for analysis and publication.
• Institutions — museums, universities, publishers and cultural organisations integrating historical maps into their own platforms.

Access conditions, endpoints and examples are described in the documentation. For academic projects and institutional integrations, write to us.