Many have a song or album which brings them back to Rome.
Of course it varies for different people. For some it might be the In Paradisum of Gabriel Fauré while for others, for example, it might be the Nessum Dorma of Puccini, etc.
But for me it has always been the Symphonie Fantastique of Hector Berlioz. Odd, but the ten minutes at the end of the Songe d'une nuit du Sabbat always carries me back to the glory of the Eternal City.