Viking Ocean Cruises’ third oceangoing ship doesn’t tinker with the line’s magic formula for success. Instead, the 930-guest Viking Sky offers the same great features found aboard sister ships Viking Star and Viking Sea, including the infinity pool and Scandinavian spa. In fact, you can book a sailing on any of Viking’s Star-Class ships — there are nine in total with the others being Viking Jupiter, Viking Mars, Viking Neptune, Viking Orion, Viking Saturn, and Viking Venus — and they’re all virtually identical. The spacious ship is hard not to fall in love with, especially with its complimentary Wi-Fi, shore excursions, and mealtime beverages (including beer, wine, and soft drinks). Just expect your fellow passengers to be on the older side (generally age 55-plus) and the nightlife to consist of engaging conversation rather than razzle-dazzle entertainment.