Royal Caribbean is bringing the world to its lineup of destinations with the first Ultimate World Cruise, visiting all seven continents over a 274-night cruise. The Ultimate World Cruise departs aboard the Serenade of the Seas from Miami on December 10, 2023, and returns September 10, 2024. Along the way, passengers will visit 57 destinations, from Casablanca to Greenland, Peru, India, Japan, and even Antartica. Extensive time will be spent on land, giving guests the opportunity to experience many of the world's distinct cultures. Royal Caribbean is taking bookings for the Ultimate World Cruise now.