Costing 1 billion US dollars to build, the "Freedom of the Seas" made by the famous Royal Caribbean Cruise Line is known as "the world's largest luxury cruise ship". It is 339 meters long and has a total of 18 floors, making it three times the size of the Titanic. The ship not only has a theater that can accommodate 1,350 people and a 130-meter-long street, but also a golf course, making it a highly luxurious "sea city". The ship has a total of 18 floors, with complete facilities including a large theater, sightseeing street, golf course, etc., all extremely luxurious.