- Federal Hotel Extension behind the original 10-storey designed by Japanese architect, Yozoshipada was completed in 1963 with a revolutionary Revolving Bintang Restaurant located on the 18th
- Another 300 rooms were made available making a total of 450 rooms. The Federal Hotel then had added more facilities for the convenience of Hotel guests, Coffee House & Bar, Piano Bar, Coral Bar, Mandarin Palace (night club), Kontiki Restaurant poolside), Bintang Revolving Lounge, Federal Bowl (the country’s largest bowling alley), Federal Health Club, Laundry & Valet services, several of these features were previously unknown in Malaysia’s hotel history.
- Federal Hotel became the home for British movie crew while filming The Seventh Dawn and the Durian Tree starring by international actors and actresses namely William Holden, Capucine, Suzannah York, Michael Goodlife and Tetsura Tamba, which was released in 1964.
- Sir Robert Menzies, former Australian Prime Minister also stayed at the Federal Hotel as did Sir Malcolm MacDonald who occupies an important place in Malaysian history owing to his involvement in the making of the Federation of Malaya (the prelude to independent Malaya) which was inaugurated on 1 February 1948.
- Other dignitaries who frequently used The Federal Hotel’s facilities included the late Tun Dato’ Mustapha, Federal Ministers such as Mohd Khir Johari (the late Tan Sri); and the late Tan Sri Dato’ Dr Haji Abdul Majid Ismail.
- From that moment on, the Federal Hotel became the choice for renowned personalities who came over to Kuala Lumpur. Among them are Pulitzer Prize winner, James A Michener, former World Heavyweight Boxing Champion Muhammad Ali, Jose Frazer, author of South Pacific and his wife Mari Yoriko Sabusawa.