These massive vessels mean you can take in the open seas without giving up all of the modern-day luxuries you still want when you're on vacation.
The newest ship to join the Royal Caribbean's fleet is also the biggest yet. It weighs a gross tonnage of 226,963, is 1,188-feet-long and cost $1.1 billion to build. It's so enormous, in fact, that guests (it can carry up to 6,780 of 'em!) will be given GPS-style trackers to avoid getting lost.
Along with the world's largest slide at sea and a Bionic Bar (where guests are served cocktails by robots), the Harmony of the Seas ship boasts a scaled down version of New York City's Central Parks — complete with 52 trees and over 10,000 plants.
At 225,282 gross tonnage and 1,187-feet-long, this Royal Caribbean ship is just barely smaller than the reigning champ (along with its sister ship, Oasis of the Seas). If you get bored easily, it has seven unique neighborhoods guests can explore onboard.
Oh, and after enjoying one of the more than 20 dining options, including a restaurant run by a James Beard Award-winning chef, you can take in a show on the ice rink — or take in this activity for yourself on a rainy day.
Out of the three Quantum class Royal Caribbean ships, this one is the largest at 168,666 gross tonnage and 1,141-feet-long. It can hold up to 4,905 Guests — which is basically the population of a small town.
The Quantum of the Seas is also known as being exceptionally advanced when it comes to technology, having the fastest internet speeds, an all-digital check-in process, a skydiving simulator and the first-ever bumper cars at sea.
If you're looking to visit the Bahamas or the Caribbean, this grand ship that weighs 164,600 gross tonnage and is 1,069-feet-long is the grandest route possible.
Along with a nursery, ropes course and casino (read: activities for all ages) is this park for children, complete with water cannons. Trust us, after a day in the water, your kids will nod off quickly so you can go and enjoy the rest of the night on the Norwegian Escape.
Listen up, adventure seekers: This 160,000-gross-ton and 1,112-feet-long Royal Caribbean vessel is (like it's sister ships) full of activities, like mini golf, a surf simulator and an ice skating rink.
But if you want to take in the views of the ocean from high above, there's nothing that'll speak more to your adrenaline junkie heart than the Liberty of the Seas' rock climbing wall.
There's a reason this 155,873 ton ship from the Norwegian Cruise Line was awarded the Best Cruise Ship Entertainment by Frommer's.
After a day in the sun, the Norwegian Epic offers award-winning entertainment that will interest each and every one of the 4,1000 guest's different tastes, including acrobats and sing-along Broadway musicals.
You'll certainly be able to relax aboard this massive Royal Caribbean ship, which boasts 154,407 gross tonnage and is 1,112-feet-long (and has two sister ships). Why? Well, it offers over 100 different spa treatments.
However, if you get bored spending too many days relaxing (rough life, we know), then you can test out the FlowRider surf simulator and pretend you're riding the waves beneath you.
Even though this Cunard cruise ship is big (we're talking 148,528 gross tonnage and 1,130-feet-long, to be exact) it's still just as regal as you'd expect, with afternoon tea and the largest library at sea.
But for pet owners, the best part has to be the kennels, which are staffed by a "Kennel Master" and easily accessible to guests so they don't have to leave their furry friends at home.
As the biggest ship ever built exclusively for the British market, this 143,000 gross tonnage and 1,083-foot-long ship from P&O Cruises also promises the most stylish stay at seas — thanks to the help of a world-leading interior designer.
If you want to spend your day laying by the pool or taking cooking classes (seriously!), the Britannia also offers clubs to entertain kiddos of all ages, ranging from two to 17.
Owned by Princess Cruises, this 141,000 gross tonnage and 1,083-foot-long ship is known for being a prestigious experience at sea and was even christened by The Duchess of Cambridge.
At night, guests can take in a movie under their outdoor screen and in front of one of the pools. That way, you don't have to choose between the beautiful outdoors and a entertaining evening.