Carnival is a leisure travel company with operations in North America, Australia, Europe and Asia. Co. operates in four segments: North America and Australia, which includes Carnival Cruise Line, Princess Cruises, Holland America Line, P&O Cruises (Australia), and Seabourn; Europe and Asia, which includes Costa Cruises, AIDA Cruises, P&O Cruises (UK), and Cunard; Cruise Support, which includes its portfolio of port destinations and other services; and Tour and Other, in which Co. owns Holland America Princess Alaska Tours, a tour company in Alaska and the Canadian Yukon that complements its Alaska cruise operations.