Privacy
There is very little to say here, which is the intended outcome.
What we collect
Nothing that identifies you. There are no accounts to sign up for, no analytics scripts, no advertising, and no third-party embeds — the content security policy blocks frames outright, which is why there is no cookie banner to dismiss.
A cookie is set only if you sign in to the authoring studio, which is not open to the public.
Location
The map's "near me" control asks your browser for your position. That happens entirely in your browser and the coordinates are used to move the map; they are not sent to us and not stored. If you decline, everything else on the map still works.
Photographs
Uploaded images have their metadata stripped before storage, including any GPS coordinates the camera recorded. Where a photo's location is shown, it is because an editor entered it deliberately — never because it was read out of a file someone did not know contained it.
Other people's servers
Map tiles are fetched from OpenFreeMap and the Geospatial Information Authority of Japan, so those services see the requests your browser makes for tiles. We have no access to their logs.