September is one of Rome’s best months for travelers who want the city at full volume, but not at peak summer intensity. The heat begins to soften, evenings are made for long walks, and the cultural calendar starts to feel rich again after August’s slower rhythm. From September 1-30, 2026, Rome will offer the kind of mix that makes the city hard to reduce to a checklist: ancient sites, museum exhibitions, outdoor performances, food traditions, neighborhood life, and quiet cor

he Colosseum in Rome has fascinated visitors for centuries, but few have had the chance to explore one of its most secret features: the Commodus Passage. This brick-vaulted tunnel, used by Roman emperors to enter the arena unseen, remained sealed for nearly 2,000 years.