This is a small group of museums in Villa Torlonia park. The main building, the Casino Nobile was most famously home to the Mussolini family, who lived here from 1925 to 1943. In the latter part of WWII, the building became the Allied headquarters (1944–47). It's a beautifully decorated, restored neoclassical villa. You can see where 'Il Duce' and family slept upstairs. There are also galleries devoted to the Roman School on the top floor. Book separately for the tour of Mussolini's underground bunkers.
Other parts of the museum include the nearby Casina delle Civette, a bizarrely gingerbread-like mix of Swiss cottage and Gothic castle decorated in art-nouveau style, built between 1840 and 1930. Devastated by a fire, it has been recently restored. Also in the grounds is the Serra Moresca, a glasshouse inspired by the Alhambra.
Casino dei Principi opens only to stage temporary exhibitions.
