Developer docs

Crowd Data API

Name: Wander Atlas Crowd Data API
Creator: Wander Atlas
License: https://wanderatlasguides.com/api/#license

Measured hour-by-hour crowd levels for 600+ attractions across 20 countries — when Fushimi Inari is actually quiet, which hours the Colosseum queue peaks. One JSON file. No key, no signup, no rate cards.

Endpoint

GET https://wanderatlasguides.com/api/crowd.json

CORS is open (Access-Control-Allow-Origin: *) and responses are edge-cached for a day — call it straight from a browser app if you like. The dataset updates on a rolling refresh measured in weeks, so polling more than daily buys nothing.

Response shape

{
 "license": "Free to use, including commercially. Attribution requested, not required.",
 "count": 618,
 "places": [
  {
   "name": "Fushimi Inari Taisha",
   "city": "Kyoto",
   "country": "Japan",
   "lat": 34.9671,
   "lng": 135.7727,
   "weekdayQuiet": [7, 8, 17],
   "weekdayBusy": [11, 12, 13, 14],
   "weekendQuiet": [7],
   "weekendBusy": [10, 11, 12, 13, 14, 15],
   "measured": "2026-08-14",
   "url": "https://wanderatlasguides.com/posts/kyoto-fushimi-inari-taisha/"
  }
 ]
}

Hours are the venue's local clock, 0–23. quiet hours are reliably below that venue's typical traffic; busy hours reliably above. No hour appears in both lists.
An empty array is a measurement, not a gap — it means we measured and found no reliable window, which is different from the field being absent.
measured is the date that venue was last refreshed, not the date of the file.

Integration advice (from our first integrators)

Match venues by coordinates, not by name. Names differ across languages and datasets; lat/lng don't.
Hours are already clamped to opening hours where we have them — a "quiet 7am" at a venue that opens at 11 has been filtered out on our side.

License & attribution

Free to use, including commercially. Attribution is requested, not required: "Crowd data by Wander Atlas" with a link makes more of this data possible.

Embeds instead of code

Want the chart without the integration? Every measured venue has a copy-paste iframe — grab yours at the widget builder.

Methodology & citing this data

How the numbers are measured, refreshed and clamped is documented on the methodology page. Journalists: cite as "Wander Atlas crowd measurements" with a link to this page; for custom cuts of the data (a city, a country, a season), email hello@wanderatlasguides.com — same-day replies for working press.