Sources and attribution

Where our information comes from, and the licences of the data and software we use.

Events

The dates, opening hours and addresses of each event are checked on the official website of the city, tourist office or organiser. A link to that source and the date of the check are shown on every event page. The descriptions are written by Weekendo.

Maps

Map tiles: OpenFreeMap (openfreemap.org), © OpenMapTiles, data © OpenStreetMap contributors (ODbL).
Map software: MapLibre GL JS (BSD licence); fallback map: Leaflet and Leaflet.VectorGrid (BSD licence).
openrouteservice.org by HeiGIT (routes, geocoding), data © OpenStreetMap contributors.

Low-emission zones

- Brussels: data.mobility.brussels (CC0).
- Antwerp: open data of the City of Antwerp; Ghent: data.stad.gent.
- Netherlands (Amsterdam, Utrecht, The Hague, Arnhem): NDW national road data (CC0).
- Aachen, Cologne, Düsseldorf, Münster, Ruhr area, Bonn: city open data and the German Environment Agency (UBA), Datenlizenz Deutschland – Namensnennung 2.0.
- Lille: IGN ADMIN EXPRESS via geo.api.gouv.fr (Licence Ouverte 2.0); Reims: national ZFE database on data.gouv.fr (Licence Ouverte 2.0); Strasbourg: Eurométropole de Strasbourg open data (Licence Ouverte 2.0).
- Greater Paris: boundary from OpenStreetMap (© OpenStreetMap contributors, ODbL).
The rules for each zone come from the official websites linked on each zone page. Coordinates have been rounded for display.

Fonts and icons

Fonts Onest and Unbounded (SIL Open Font License).
Icons: Lucide (ISC licence).

Corrections

If you see an error, write to hello@weekendo.eu — we check and correct quickly.