{
  "id": "submarine-pens",
  "title": "The concrete pens too large to remove",
  "location": "Saint-Nazaire, France",
  "coordinates": {
    "latitude": 47.266666666666666,
    "longitude": -2.2
  },
  "category": "Infrastructure",
  "dataset": "OpenStreetMap",
  "source": {
    "name": "OpenStreetMap geographic features",
    "url": "https://www.openstreetmap.org/"
  },
  "summary": "Massive wartime bunkers remain embedded in a modern port.",
  "editorialInterpretation": "Massive wartime bunkers remain embedded in a modern port. Map and record layers place this feature in its wider geographic, historical and civic context.",
  "computed": {
    "nearestSettlement": null,
    "relatedPlaces": [
      {
        "id": "maunsell-forts",
        "title": "Sea forts standing on stilts",
        "distanceKm": 534
      },
      {
        "id": "maginot",
        "title": "The underground railway of the Maginot Line",
        "distanceKm": 638
      },
      {
        "id": "large-hadron",
        "title": "The machine crossing an international border",
        "distanceKm": 639
      }
    ],
    "pageQuality": 89,
    "indexable": true
  },
  "provenance": {
    "generatedAt": "2026-08-28T17:01:37.573Z",
    "method": "MapTheOdd place-page generator v2",
    "limitations": [
      "Access may change",
      "Computed distances are straight-line",
      "Nearest settlement comes from GeoNames cities500",
      "Editorial interpretation should be checked against the linked source"
    ]
  }
}