At the southwestern corner of Villa Borghese, the Pincio belvedere and gardens were laid out by architect Giuseppe Valadier as part of his overall plan for Piazza del Popolo. Nineteenth-century counts and countesses liked to take their evening passeggiata here in the hope of meeting Pius IX (1792-1878), the last pope to go about Rome on foot. Nowadays you're more likely to see runners and in-line skaters, as well as throngs of Romans out for a stroll. It's a good place to take in the summer concerts and New Year's fireworks staged in Piazza del Popolo below.