Costa Diadema, the fifteenth ship in the Costa Cruises fleet, was built by Fincantieri in Marghera in 2014 with an investment of approximately €550 million. An ambassador of the best of Italian style, she features modern and spacious interiors, with large multi-level areas overlooking the sea. Her most distinctive feature is the outdoor promenade on Deck 5—a true Italian-style terrace stretching over 500 meters—that recreates the atmosphere of a lively seaside resort.