{
  "id": "sanborn-tunnels",
  "title": "The city recorded building by building",
  "location": "New York City, United States",
  "coordinates": {
    "latitude": 40.71666666666667,
    "longitude": -74
  },
  "category": "Heritage",
  "dataset": "Library of Congress",
  "source": {
    "name": "Sanborn Fire Insurance Maps",
    "url": "https://www.loc.gov/collections/sanborn-maps/"
  },
  "summary": "Fire-insurance maps preserve vanished tanks, yards, passages and industrial footprints.",
  "editorialInterpretation": "Historic map sheets turn ordinary blocks into time machines by recording construction, use and infrastructure in remarkable detail.",
  "computed": {
    "nearestSettlement": null,
    "relatedPlaces": [
      {
        "id": "bell-labs",
        "title": "The laboratory built like a mirror",
        "distanceKm": 42
      },
      {
        "id": "bannerman",
        "title": "The armoury castle on an island",
        "distanceKm": 82
      },
      {
        "id": "tesla-wardenclyffe",
        "title": "Tesla’s unfinished transmission tower site",
        "distanceKm": 97
      }
    ],
    "pageQuality": 100,
    "indexable": true
  },
  "provenance": {
    "generatedAt": "2026-08-28T15:46:06.968Z",
    "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"
    ]
  }
}