most expensive river ship ever built
The most expensive cruise ship roaming the seas today is owned by Royal Caribbean International, the world leader in luxury cruises. Allure of the Seas is the largest and most expensive passenger ship ever built. It is only two inches longer than its little sister, Oasis of the Seas. The 16-deck vessel can accommodate 6,296 guests, plus 2,384 crew members, which sums up to 8,680 passengers.