A short walk away is the fountain and obelisk in front of the Pantheon, one of the best-preserved relics of ancient Rome. It, too, is boarded off. And it's the same story across the Italian ...

Much like Piazza del Popolo, Piazza Navona's centerpiece features an obelisk. However ... about a four-minute walk west of the Pantheon. The fountain is free to visit any time of day.