Marseille, Genoa, Barcelona, Marseille

MSC Cruises may be headquartered in Switzerland, but the ambience onboard its 23 ships is very much Italian owing to its owners, the Aponte family.

Ships feature a two-storey Mediterranean-style promenade and Instagram-worthy glass staircases filled with Swarovski crystals.

The line’s flagship is the 6,327 passenger MSC Euribia, which is MSC's second ship to run on liquefied natural gas.