Rome guide: boundary sources and attribution
Retrieved 12 October 2026.

Rioni: Roma Capitale, Geoportale, Suddivisioni Toponomastiche.
https://geoportale.comune.roma.it/catalogo/
Public WFS service: https://geoportale.comune.roma.it/geoserver/ows
Layer: DIPSER:SuddivisioniToponomastica
Selected records: CODICE_SUDDIVISIONE 101 through 122.
The catalog identifies this geographic layer as publicly available through
its interoperable service. The download endpoint does not include a separate
license statement; this attribution does not assign a new license to its data.
Consult Roma Capitale for the source's conditions of reuse.

Vatican City: OpenStreetMap contributors, relation 36989.
https://www.openstreetmap.org/relation/36989
https://www.openstreetmap.org/copyright
OpenStreetMap data is available under the Open Database License (ODbL) 1.0.
https://opendatacommons.org/licenses/odbl/1-0/

The sources were converted to WGS84 GeoJSON and simplified together for a
learning map. Properties use stable guide IDs and original descriptive copy.
The same geometry is used for the guide poster and playable district map.
Vatican City is an independent state; it is not one of Rome's 22 rioni.
The map covers the historic core and Vatican City, not the whole municipality.