5. World's largest casino - Venetian Macao Resort hotel

The total casino space at this resort (http://www.venetianmacao.com/en/home.aspx) that opened in August 2007 is about 550,000 square feet, with 870 gaming tables and more than 3,400 slot machines to go along with their 3,000 suites and 1 million square feet of retail space.