Cruise ships are a generally an all inclusive getaway designed to accommodate passengers with luxury amenities at sea. Two of the world's largest and most prestigious ships are Royal Caribbean International's, Allure of the Seas and MS Allure of the Seas. Combined, the two ships can hold over 12,000 passengers at a time. Hit the thumbs to see a detailed look from these two vessels and check out the most impressive cruise ships of our time. [DesignYouTrust]