In the 30s, a new urban and architectural design gave birth to the rationalist idea of the twenty-year Fascist period.
The new face of Forlì was designed by Roman architects, like Cesare Bazzani (Postal Building, State Offices Building, War Memorial of Piazzale della Vittoria) and Cesare Valle (O.N.B. House then G.I.L. and Aeronautical Academy), and local artists, such as Arnaldo Fuzzi (Agricultural Station, I.T.I.S., I.N.A. Buildings).
The nearby Predappio is a real Urban Museum. Commissioned in 1925 by Benito Mussolini, who was born there in 1883, it develops around Piazza Garibaldi and Piazza Sant'Antonio. Not to be missed are the Parish Church of St. Anthony of Padua, the graveyard of San Cassiano in Pennino, the native house of Mussolini and the so-called Rocca delle Caminate, the summer residence of Mussolini Family.
In the 30s, Mussolini decided to build a big thermal hotel in Castrocaro Terme in order to use it as the guest quarters of Rocca delle Caminate. It consisted of three main buildings: The bathing establishment, the hotel itself and the entertainment pavilion, that were all fully integrated with the surrounding park. Forlì's rationalist heritage was included in the list of outstanding beauties identified by the international project "Rotta Culturale Europea", that gathers the most representative architectures of the totalitarian regimes of the XX century.