December travel connects Atlanta's holiday scene (such as Atlanta Christkindl Market, The Lighting of Atlantic Station, and the Peach Drop New Year’s events) with Rome’s iconic Christmas and New Year celebrations. In Rome, must-see seasonal events include the Vatican Christmas tree and Midnight Mass at St. Peter’s Basilica, Christmas markets (Mercato di Natale) at Piazza Navona (where scheduled), Epiphany parades on January 6, and New Year’s Eve concerts and fireworks around the city. These events drive increased demand for flights and accommodations in December, so book transfers, train tickets, and hotels early. Use keywords like 'Christmas in Rome', 'Vatican Midnight Mass tickets', and 'Atlanta holiday markets' when planning. CTA: Reserve your Rome tours and Vatican access ahead of your December arrival to avoid sold-out experiences.