Actually, after doing a little bit of searching on this forum, I found this thread trying to do a similar thing:
And what he’s doing there is just using the cesium viewer that we host, and providing a link to the KML file in the URL. So if you had KML hosted in a URL like:
You could create a viewer that loads this data like this:
And then you could just use an iframe in WordPress, give it that link, and you should have that data displayed in Cesium, in your website, no code needed!
Of course the drawback here is that if you want to customize the map in any way you would have to write some code to do that. That’s kind of the big draw of Cesium is how much you can alter and customize. The other drawback to this is that since it’s cesiumjs.org that’s hosting the map, you might run into rate limits since you’re using the default Cesium token for loading imagery as opposed to getting your own token from ion (http://cesium.com/ion).