In pictures: Queen Elizabeth II in Action

Queen Elizabeth II, whose illustrious reign began in 1952, has seemingly never put a wrong foot forward. Her impeccable work ethic is beyond compare and she has scoured the world over, meeting heads of states, leaders of governments, and adoring fans and subjects eager to get a glimpse of her. She has remained the most traveled sovereign in the world and has, in many ways, redefined the British monarchy, transforming it into a respected institution that it is today.

Queen Elizabeth II and Prince Philip, Duke of Edinburgh during their visit in the NASA Goddard Space Flight Center in Greenbelt, Maryland.

Queen Elizaberth II and Prince Philip enjoying a chat with President Barack Obama and First Lady Michelle Obama, Ambassador Louis Susman, and Mrs. Margaret Susman before a dinner in the Queen's honor at Winfield House in London, England, May 25, 2011.Image from the Official White House Photo by Pete Souza.

Mrs. Lynne Cheney is greeted by the Queen in 2007 during 400th anniversary celebrations at Jamestown Settlement in Williamsburg , Virginia. White House photo by David Bohrer.

Then-Princess Elizabeth greeted by Prime Minister Winston Churchill in 1950. Image from Wikimedia Commons.

The Queen and Prince Philip in Queensland.  Thousands of Australians turned out to get a glimpse of The Queen and Prince Philip. A group of children in costume move forward to get a closer look at their sovereign in Mackay. Image from State Library of Queensland.

Queen Elizabeth II with Nigerian businessman Dele Momodu in 2005. Image from Wikimedia Commons

The Queen in New Zealand. On 28 February 1977 Queen Elizabeth II officially opened the new Executive Wing of the New Zealand Parliament Buildings, nicknamed the “Beehive”. Image from Archives New Zealand

Queen Elizabeth II is greeted by Winston and Clementine Churchill as she arrives for a dinner given at 10 Downing Street on April 4, 1955. Image from Flickr

The Queen and the Reagans.  In June 1982, US President Ronald Reagan visited Britain where he addressed Parliament. A banquet in honor of President Reagan and his wife, Nancy, was hosted by the Queen at Windsor Castle.  The Queen reciprocated the visited and from February until March 1983, Queen Elizabeth II proceeded to the US after a tour of Mexico. She toured the West Coast on board Britannia. A glittering dinner was hosted by President Reagan in Sound Stage 9 at 20th Century Fox studios in Hollywood, attended by such legends as Fred Astaire, Michael Caine, and George Burns. Queen Elizabeth II and Prince Philip stand with President and Mrs. Reagan during a state dinner. Image from Wikimedia Commons. 

The Queen and Mrs. Laura Bush. In this picture taken by Shealah Craighead for White House,the Queen is joined by US First Lady Laura Bush  during a visit to the Children’s National Medical Center in Washington, D.C.