Rome, the heart of Catholicism and former capital of the Roman Empire, offers a powerful blend of faith and history. Pilgrims visit the Basilica of St. Mary Major, home to a relic of the manger, the Scala Sancta, the Trevi Fountain and the Basilica of St. John Lateran. The journey also includes St. Paul Outside the Walls and the historic Colosseum, once used for gladiatorial games.