The former crosses Piazza Carignano, well known mainly for the undulating “concave - convex - concave” Baroque façade of Palazzo Carignano. This building used to host the Parlamento Subalpino (the “Royal parliament”, which also became the Italian Parliament for a few years, after the Italian unification) and today houses the Museum of the Risorgimento. The square also features the Teatro Carignano, a well-conserved Baroque theatre. Via Carlo Alberto crosses Piazza Carlo Alberto, a big square hosting the rear façade of Palazzo Carignano, in eclectic style. On the other side stands the monumental Biblioteca Nazionale (National Library).