A cruise ship captain says a historic city with a 300-year-old fish market, huge river, and historic tunnel is one of the ...

As such, Icon actually has slightly fewer staterooms (2,805) than Utopia (2,834), despite being a bigger ship overall. Utopia, by contrast, is part of Royal Caribbean's Oasis class.

The 4,482-guest ship is my new favorite, marrying luxury with amusement park-like amenities. Aqua has a stellar food hall, a waterslide roller coaster, and a high-tech mini-golf course.