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"On Viking River Cruises' twelve-day Cities of Light itinerary between Paris and Prague, passengers glide past scenic cities and German stops while enjoying onboard comforts such as sipping a glass of wine and watching cities slip by, making it an appealing, leisurely option for solo travelers." - Alison Fox Alison Fox Alison Fox is a Travel + Leisure contributor. She has also written for Parents.com, The Wall Street Journal, and amNewYork. When she’s not in New York City, she can be found at the beach or on the slopes. Travel + Leisure Editorial Guidelines