Vorlage:Openstreetmap
Aus Kiel-Wiki
Usage in a continuous text:
{{Openstreetmap|WorldGeodeticSystemNorth=54.3157|WorldGeodeticSystemEast=10.1315}}
issues
[https://www.openstreetmap.org/#map=16/54.3157/10.1315 openstreetmap.org]
and looks like openstreetmap.org
The granularity is about 10 meters.