As originally planned, "Costa Olympia" would have had an exterior and interior design identical to "Costa Victoria". Following the acquisition by Norwegian Cruise Line, she was radically redesigned. Design changes included two decks of balcony cabins (opposed to no balcony cabins in the original plans), three additional restaurants, entirely altered decor and moving the bridge down by one deck to accommodate an observation lounge/spa complex on the topmost deck. Both the original and revised plans were the work of Tillberg Design.