Even though I've been here, I'm not sure if this building was originally built as a church; if it was, perhaps we can just change "building=yes' → "building=church", and consider that this is just a church (i.e. place of worship), which, while being in a state of ruin, is still used for the original purpose; if the original purpose of the building was something else, I think we should add a separate node inside it for the shrine.