The beacon at the summit of One Tree Hill was erected to commemorate the Silver Jubilee of King George VI in 1935. It was subsequently used for the Coronation of Queen Elizabeth II, her silver and golden jubilees and also at the Millennium. Beacons on the same site were used to give warning of invasion by the Spanish and later the French. The Hill was also the site of Watson's General Telegraph, a relay system established in 1841 linking London with shipping in the English Channel