Allure of the Seas

The second of Royal Caribbean’s world-changing Oasis-class ships, Allure of the Seas is a few inches longer than her older sister-ship Oasis of the Seas, and so technically holds the crown as the largest cruise ship ever built, measuring in at 225,282 gross tons and carrying a remarkable 5,400 guests at double occupancy, plus nearly 3,000 crewmembers.

That few inches of difference aside, Allure is essentially identical in conception and layout to Oasis, but since Oasis is probably the most revolutionary cruise ship ever built, that means Allure is pretty special too, from her incredible number of guest amenities to her game-changing design, which took the monolithic cruise ship superstructure and split it lengthwise into what are essentially two long buildings set atop her hull — one to port and one to starboard, with a long, deep canyon between them and various joins along the way to provide structural strength.