Vlag gemeente <a href="https://nl.wikipedia.org/wiki/Castricum" class="extiw" title="nl:Castricum">nl:Castricum</a>
User <a href="https://nl.wikipedia.org/wiki/User:Arch" class="extiw" title="nl:User:Arch">Arch</a>
2019
=<a rel="nofollow" class="external text" href="http://www.flagchart.net/gemew-af.htm">Flagshart</a>