It’s fairly easy to find your way around Celebrity Infinity, which owes its lasting appeal to its intimate size and cool itineraries. This Millennium-class ship holds 2,170 passengers and gives you the Celebrity Cruises experience at a reasonable price since it’s not exactly shiny and new — in fact, it’s the line's second-oldest ship. Infinity has been sailing since 2001 and was last refurbished in October 2015 during a refit that added a Tuscan Grille restaurant, a new lounge on Deck 12 with a large video screen, and updated designs throughout. As of late 2023, however, Infinity has not been “Revolutionized” with Edge Series details like its sister Millennium-class ships Millennium and Summit.