Ritz-Carlton: 1983 Pan Pacific Hotels: 1975 Mercure: 1973 Shangri-La: 1971 Accorhotels: 1967 Sofitel: 1964 Mandarin Oriental: 1963 Four Seasons: 1960 Hyatt: 1957 Holiday Inn: 1952 InterContinental: 1946 Best Western: 1946 Sheraton: 1937 Marriott: 1927 Hilton: 1919
