At first, these head sculptures also seemed strange to me, but it turned out that they are ceramic vases very popular on the Italian island of Sicily, so-called Moor's heads. Here you can read more about them and why they are in the form of a human head. I also added information about it in my post.
RE: La dolce vita 🇮🇹 Elegant, fancy Italian restaurant Lupo and its signature dish, flower-shaped fiori pasta, stuffed with ricotta, parmesan, mascarpone and oregano, with burnt butter and hazelnuts