 The municipality of Ahrntal contains the "frazioni" (subdivisions, mainly villages and hamlets) Luttach (Lutago), Steinhaus (Cadipietra), St. Jakob (San Giacomo), St. Johann (San Giovanni), St. Peter (San Pietro) and Weißenbach (Riobianco).Weißenbach is composed of picturesque alpine farmhouses, grouped around the foaming white glacial stream from which its name is derived.With a population of around 550, it sits at an elevation of above sea level.