Roman Holiday follows Ann, a young princess who runs away from her embassy for one day, and Joe, an American reporter who shows her Rome while secretly planning to sell her story. It was all shot on the real streets of Rome in 1952, and almost every place is still there. Start at the Mouth of Truth, where Joe pretends to lose his hand, and the Theatre of Marcellus the Vespa passes on the way.
The rest fits in two walks. In the north: Via Margutta 51, Joe's flat, the Spanish Steps of the gelato, the Trevi Fountain and the barber's shop round the corner, then Palazzo Barberini, the embassy, and Piazza della Repubblica, where Ann's escape begins. In the centre: the Pantheon café, Piazza Venezia, the Roman Forum where Joe finds her asleep, the Colosseum, Palazzo Colonna for the final press conference, and Castel Sant'Angelo at dusk for the dance on the river.
Check before you go: Palazzo Colonna opens only a few days a week, the Colosseum and Forum need timed tickets, and Via Margutta 51 is a private courtyard. Sitting on the Spanish Steps is now forbidden. Seven years later Fellini filmed La Dolce Vita at the same Trevi Fountain.