Era per far capire che c'è qualcosa lì che occupa spazio, che non è una semplice statua per terra o una lapide

I want to respect OSM good practice rules, if the monument tag is inappropriate for it i'd like to change it, however i don't know what other tag would fit this kind of point of interest

How would you suggest I mark it instead? Even if silly I believe it should still be marked in some way on the map.