Cruise ships are the top choice for those who want relaxing vacations. Concept cruise ships take luxury one notch further. Read all about the world’s most expensive concept cruise ships at this link. These ships are costly because of their amazing features and amenities. Concept cruise ships such as these are the option for those who have a lot of cash to splurge. Some of the top ships in this list have inbuilt airports and casinos in them. These ships can accommodate a huge number of people. They are ideal for those who want to enjoy luxury at its best. These ships are ideal for those who want to travel in style.