The Royal Caribbean's 226,963-ton Harmony of the Seas ... 1,700 tons and offers a number of new features. Among them: Ultimate Abyss, which just might be the most thrilling attraction ever ...

Operator: Royal Caribbean International Another Oasis-class masterpiece, the Harmony of the Seas is renowned for its Ultimate Abyss, the tallest slide at sea, which plunges thrill-seekers down 10 ...

A total of 2363 guests have reviewed Harmony of the Seas, giving it a rating of 4.5 on a scale of 1-5. Poor weather but great group Jan 26th, 2025 The weather wasn't great. Cooler and some rain.

These include laser tag, an escape room, and a giant slide called the Ultimate Abyss. This 10-story thriller is the tallest slide on the high seas. —Ellen Nam ...

The second-place finisher, Royal Caribbean's "Ultimate Abyss," can be found on Wonder of the Seas, Symphony of the Seas, Harmony of the Seas, and Oasis of the Seas. It's a free-to-ride dry slide ...

s newest ship, Harmony of the Seas. In addition to custom Friendsgiving menus and cocktails, guests can also slide down the 10-story Ultimate Abyss, surf on the Flowrider and rock climb. Participating ...