 Some of the largest companies headquartered in Brisbane, all among Australia's largest, include Suncorp Group, Virgin Australia, Aurizon, Bank of Queensland, Flight Centre, CUA, Sunsuper, QSuper, Domino's Pizza Enterprises, Star Entertainment Group, ALS, TechnologyOne, NEXTDC, Super Retail Group, New Hope Coal, Jumbo Interactive, National Storage, Collins Foods and Boeing Australia.As a result of its many varied landscapes, warm climate and abundant natural beauty, tourism is Queensland's leading tertiary industry with millions of interstate and international visitors visiting the state each year.The industry generates $8.8 billion annually, accounting for 4.5% of Queensland's Gross State Product.