Location map of <a href="https://en.wikipedia.org/wiki/Japan" class="extiw" title="en:Japan">Japan</a>
<a href="https://de.wikipedia.org/wiki/User:Chumwa" class="extiw" title="de:User:Chumwa">Maximilian Dörrbecker</a> (<a href="https://de.wikipedia.org/wiki/User:Chumwa" class="extiw" title="de:User:Chumwa">Chumwa</a>)
CC BY-SA 3.0
own work, using <a href="//commons.wikimedia.org/wiki/File:Japan_admin_levels.svg" title="File:Japan admin levels.svg">Image:Japan_admin_levels.svg</a>