We start from the most important public building erected in the first half of the 20th century: the Santa Maria Novella train station, looking　also at the nearby Palazzina Reale. We will then talk about two of the most important contemporary interventions in the city: the museum projects of the Spedale degli Innocenti (Ipostudio) and the Museo dell'Opera del Duomo (Natalini Architetti, with Guicciardini & Magni). We end the tour talking about the Teatro Puccini and the Manifattura Tabacchi.