One of Royal Caribbean’s largest cruise ships, Allure of the Seas, is getting ready to welcome passengers on board in Europe this summer with a major $100 million (£77 million) revamp.

Boy banders Lance Bass and Joey Fatone staged a mini-N Sync reunion on the high seas during Royal Caribbean's Dirty Pop at Sea cruise aboard the Allure of the… ...

The Allure features a nine-story zip line, two FlowRider surf simulators, twin rock climbing walls, ice skating, mini-golf, the Sports Court, the H2O Zone kids' aquapark and an adults-only Solarium.

The Allure features a nine-story zip line, two FlowRider surf simulators, twin rock climbing walls, ice skating, mini-golf, the Sports Court, the H2O Zone kids' aquapark and an adults-only Solarium.

Some of the amenities on the Allure of the Seas" which has been sailing roughly 13 years, include a zip line, Starbucks, arcade, mini golf and rock climbing.

Some of the amenities on the Allure of the Seas" which has been sailing roughly 13 years, include a zip line, Starbucks, arcade, mini golf and rock climbing.