To my mind, all of the negative comments (dull, inappropriate) about Public Toilets apply to this category, and none of the positive ones (usefulness, architecturally interesting).
you may not exclaim "Wow!", but perhaps you or someone else might find the waymarks in this category useful in some way.
I suppose someone could conceivably find this useful - maybe someone who needs somewhere handy to go to deal drugs/dump litter/commit a mugging.