Originally posted by ec928:

Events, and their triggers are described here: https://valheim.fandom.com/wiki/Events

Lots of things count as structures including campfires and beds. And interestingly, a crafting bench doesn't count but it's an old wiki so an update may have adjusted things.

Thanks for the edit / clearer answer. Just saw it.

lol hence why Wiki-vid links are not to be trusted at times. Not until full-release, and even then...sometimes the wiki's for games are just plain horrible for outdated / false information. I find it better to talk to other players to see what's up.