Costa Diadema, launched in 2014, is built for relaxation and fun with lots of on-board activities, scintillating bars, gourmet restaurants and the spa area.
Among the special features not to be missed: an entire deck dedicated to children with castle and pirate galleon and the terrace on deck 5 for strolling and enjoying an aperitif at sunset: a real treat for holidaying in perfect Italian style. The cabins aboard our Flagship are elegant, well-appointed and spacious for up to five guests. At any time of the day or night you'll be spoilt for choice on what to do: sports, games, a large three-story theatre that welcomes international artists, and you too can take to the stage with Tu sì que Vales... and then the Aperol Spritz Bar for a cocktail before dancing the night away at the disco, a games room for returning to your childhood and a real German pub. We look forward to welcoming you on board. Now take a look at the current position of Costa Diadema.
Life on board
Life on board
Experience a dream vacation on a Costa Cruise, deals and activities for everyone.
A toast with a special beer to make your trip with Costa Cruises even more exciting!
Wine shop and wine bars
You can purchase beautiful gifts on board and everything else you may need for your cruise.
Amarillo Ice Cream & Chocolate Shop
Cabins and suites
Discover our cabins
Discover the interiors
Interactive ship maps
Browse the decks and see all the rooms on the ship