While in port in Marseille, discover where the seat of the papacy was once located on this private tour of Avignon. Take a walking tour of the medieval town's UNESCO World Heritage-listed historic center with your guide, and enjoy the rest of the afternoon to explore on your own. Take photos on the Pont Saint-Bénezet, visit Cathedral Notre-Dame des Doms, enter the Popes’ Palace (own expense), and stroll around the picture-perfect town at leisure.