Explore Carcassonne, a fortified medieval city in southern France. Walk the double ring of ramparts of the Cité de Carcassonne (a UNESCO World Heritage site with 52 towers), admire the Basilica of Saints Nazarius and Celsus (known for its 12th-century stained glass and Gothic choir), and cross the Pont Vieux (a 14th-century stone bridge offering panoramic views of the city).
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