World's Coolest Pools
Royal Caribbean International
Royal Caribbean “Oasis of the Seas,” Eastern and Western Caribbean
Why It’s Cool: The largest cruise ship in the world (with a capacity of 6,360 guests and 2,394 staff) features the most tricked-out pool at sea. By day it serves as a swim and dive spot for scuba certification; at night, it’s the setting for aerial aquatic performances.
Interesting Fact: The pool’s retractable bottom, which includes three custom lifts, allows it to stretch as deep as 18 feet—an incredible feat of engineering at sea. oasisoftheseas.com