outingworld's longest cruisesShare on FacebookShare on Twitter260IMAGESThe World’s Longest Cruise Hits All 7 Continents in 357 DaysCruise Line Announces Longest World Cruise Ever, Visits 59 CountriesWorld's longest cruise, Viking Sun, sets sail from London; SetsRoyal Caribbean announces worlds longest cruise spanning nine monthsWorld's Longest Cruise? The 274 Day Trip Of A LifetimeRoyal Caribbean to offer 274-night cruise
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