Best structure is wood frame...swings and sways but stay up.
Worst is stone or brick.
Too many variables with logs. Two story, falling beams, and the way logs are joined. Something small would probably be OK.
I grew up in California. Log house sounds kind of scary to me.
I live in a two story, 300 year old log house that’s literally stacked on a “foundation” of flat rocks laid in/on the ground.
It wiggled some yesterday but not a single thing fell down, over or off.
So far, so good.
The added-on downstairs bedroom/bathroom must’ve shaken harder.
It woke hubby up from a sound sleep.
It’s built on a concrete slab.
Seems like he felt it more than I did.