{
  "source": {
    "provider": "Instituto Geográfico Nacional",
    "collection": "administrativeunit",
    "level": "Provincia",
    "retrieved": "2026-09-11",
    "crs": "OGC:CRS84",
    "url": "https://api-features.ign.es/collections/administrativeunit",
    "simplification": {
      "method": "Douglas-Peucker in EPSG:3857, split at shared-edge ownership changes; canonical direction for shared arcs",
      "toleranceMercatorMetres": 75,
      "coordinateDecimals": 8,
      "allComponentsAndHolesRetained": true,
      "selfIntersectionRepair": "Restore source vertices in crossing segments, shared across provinces"
    }
  },
  "provinces": [
    {
      "id": "barcelona",
      "cityId": "barcelona",
      "name": "Barcelona",
      "nationalCode": "34090800000",
      "featureId": 1174465
    },
    {
      "id": "bizkaia",
      "cityId": "bilbao",
      "name": "Bizkaia",
      "nationalCode": "34164800000",
      "featureId": 1174505
    },
    {
      "id": "granada",
      "cityId": "granada",
      "name": "Granada",
      "nationalCode": "34011800000",
      "featureId": 1174475
    },
    {
      "id": "madrid",
      "cityId": "madrid",
      "name": "Madrid",
      "nationalCode": "34132800000",
      "featureId": 1174485
    },
    {
      "id": "murcia",
      "cityId": "murcia",
      "name": "Murcia",
      "nationalCode": "34143000000",
      "featureId": 1174487
    },
    {
      "id": "malaga",
      "cityId": "malaga",
      "name": "Málaga",
      "nationalCode": "34012900000",
      "featureId": 1174486
    },
    {
      "id": "salamanca",
      "cityId": "salamanca",
      "name": "Salamanca",
      "nationalCode": "34073700000",
      "featureId": 1174494
    },
    {
      "id": "alicante",
      "cityId": "san-vicente-del-raspeig",
      "name": "Alacant/Alicante",
      "nationalCode": "34100300000",
      "featureId": 1174460
    },
    {
      "id": "sevilla",
      "cityId": "seville",
      "name": "Sevilla",
      "nationalCode": "34014100000",
      "featureId": 1174498
    },
    {
      "id": "valencia",
      "cityId": "valencia",
      "name": "València/Valencia",
      "nationalCode": "34104600000",
      "featureId": 1174503
    },
    {
      "id": "zaragoza",
      "cityId": "zaragoza",
      "name": "Zaragoza",
      "nationalCode": "34025000000",
      "featureId": 1174507
    }
  ]
}