![Europa 2's pool deck](https://media.shermanstravel.com/cruises/thumb/xlarge/8460_10_-_42_r_pooldeck_hlkf_ms-europa-2_pooldeck_8883-jpg.jpg)
Photo: Europa 2's pool deck / Hapag-Lloyd
10. Europa 2
The length of Europa 2’s pool — one of the longest at sea — stretches more than 49 feet, making it perfect for lap swimmers. It’s enclosed under a glass roof that, weather-dependent, slides open or closed so you can practice your strokes rain or shine.