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If beautiful masterpieces are as common as bricks in Rome, parks are far rarer. Happily, although you'll find few ilex and poplars dotting piazzas and streets, a verdant hoard can be found to the north of central Rome's cobblestoned chaos. Here breathes the city's giant green lung: the Villa Borghese park, where residents love to escape for some serious R&R. But don't think you can completely prevent gallery gout: three of Rome's most important museums are inside the park, and Piazza del Popolo (which has some art-crammed churches) is close by.