<P> Keith Richards and Mick Jagger performed in the East Penthouse on the 45th floor of the New York Hilton on October 28, 1965 . </P> <P> John Lennon and Yoko Ono honeymooned in the presidential suite at the Hilton Amsterdam where they hosted one of their famous "Bed - Ins" for a full week in 1969 . </P> <P> In 1971, Diamonds Are Forever was filmed at the Las Vegas Hilton . </P> <P> On April 3, 1973, Dr. Martin Cooper made the world's first cell phone call in front of the New York Hilton Midtown . A press conference was held at the hotel later that day to mark the milestone . </P>

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