This is the world’s biggest cruise ship for thrill seekers. The Harmony of the Seas is Royal Caribbean’s newest ship. The ship is filled with thrill rides. The Ultimate Abyss is a 10-storey tube slide. The Perfect Storm is a series of three waterslides.

The FlowRider is an infinity wave. There’s an 82-foot zipline across the courtyard and a rock wall. Feeling seasick yet? No, you won’t.