Since her coronation in 1952, the Queen has seen 12 prime ministers and 12 US presidents.
Today Queen Elizabeth II celebrates her Diamond Jubilee.
From the snowiest corner of her realm, comes the unveiling of a special Jubilee emblem carved in ice at Ottawa's annual Winterlude festival, amongst a series of celebratory gestures from across the Dominion of Canada.
The federal government revealed in December that it had set a $7.5-million budget to celebrate the royal anniversary. Most of which is earmarked for the Jubilee medal presentations, which are to be held in Ottawa and at provincial capitals throughout 2012. More than 60,000 of the country's most dedicated volunteers and outstanding achievers are to be awarded the Jubilee medal.
Canada Post will issue a set of commemorative stamps marking each decade of the Queen's reign, including one design that recalls the Diamond Jubilee of Elizabeth's own great-great grandmother, Queen Victoria, in 1897.