La Nazione del Risorgimento, by Banti, Einaudi publishing, is a really interesting book on Italian nation-building, and on the lack of common beliefs at those times. Italy is seen as a regionally-based country, with little shared culture. I don't remember if there is any reference to the Altare della Patria, however.
My advise is to check upon life of Guiseppe Garibaldi, for instance. He was the personification of that time hero, a trully ideal of tangible utopia and also self promoted liberator of the two worlds personage that binded the so mixedup Italy towards (re)union, but also lives in the 'imaginario' of southerbrazilians and uruguaians.