We've collected some of the coolest and most out-there amenities on offer to help you choose the right vessel for your next cruise.
Whether you're into epic waterslides or private saunas, there's sure to be something that takes your fancy.
SkyRide, Carnival Vista
The latest ship to join Carnival's fleet, the Vista offers some innovative experiences - including an 800ft cycling track that's suspended above the upper deck.
It's not your average cycling track - called the SkyRide, passengers ride in special pedal-powered cars that offer spectacular views of the sea and everything else happening on board.
Snow Room, Norwegian Escape
Holidaymakers usually want a break from the cold when they head to the Caribbean, but Norwegian Escape has the company's first-ever Snow Room on board for those looking to improve their health.
It forms part of the ship's Thermal Suite and is kept between -6C and 0C, and artificial snowflakes fall from the ceiling throughout the day.
Norwegian Cruise Line said the Snow Room offers a number of health benefits, including increased blood circulation.
F1 Simulator, MSC Cruises
MSC Cruises' four Fantasia class ships offer the chance to experience Formula 1 racing, while cruising the ocean.
The simulator includes a replica car and a variety of tracks to try out.
It's currently offered on MSC's Fantasia, Splendida, Divina and Preziosa cruise ships.
SeaWalk, Princess Cruises
With a glass floor that stretches for 60 ft, 128 ft above the ocean, the SeaWalk will have you feeling like you're walking on air.
It's exclusive to the Royal Princess and Regal Princess ships and is located high on the 17th deck.
Ice Bar, Norwegian Epic
Passengers can truly chill out at Norwegian Epic's -10C Svedka & Inniskillin Ice Bar - a great way to beat the heat when the ship sails to the Mediterranean this northern summer.
No one needs to worry about frostbite either, as passengers are provided with appropriate winter clothing at the entrance.
The Ultimate Abyss, Harmony of the Seas
As the world's largest cruise ship, Harmony of the Seas can boast some pretty big features - including the 10-storey "Ultimate Abyss", which is, of course, the biggest slide at sea.
However, it's not actually a waterslide - passengers enter through the mouth of a menacing anglerfish and ride the slide on a black mat with an open sack to place your feet in.
The Lawn Club, Celebrity Cruises
Just because you're at sea doesn't mean your croquet game has to suffer - if you're on one of Celebrity's Soltice Class ships, head right to the Lawn Club.
It's the only cruise line to offer real grass on the top deck, with a country club atmosphere. It's a great spot to have a picnic, play games or just enjoy the feeling of grass between your toes.