1998 - The Queen endorses a plan to end gender discrimination in the line of succession for the throne.

2002 - The Queen celebrates her Golden Jubilee, or 50th anniversary, on the throne.

December 2006 - The Queen issues her annual Christmas broadcast live for the first time since 1960.

May 3-8, 2007 - The Queen and Prince Philip visit the United States for the 400th anniversary of America's first settlement by a British company in Jamestown in 1607. They attend the Kentucky Derby on May 5 and a State Dinner at the White house on May 7.

April 2, 2009 - Meets Michelle Obama at Buckingham Palace and the ladies are photographed with their arms around one another. Touching the queen is not a typical occurrence and causes lots of media attention and speculation as whose arm was on whom first.

July 6, 2010 - Addresses the General Assembly of the United Nations for the second time.

April 21, 2011 - On the Queen's 85th birthday, the palace releases the Queen's official consent, the Instrument of Consent, to the wedding of Prince William and Kate Middleton. By law, Royal Marriages Act of 1772, the monarch must consent to most royal marriages.

May 17, 2011 - Makes the first state visit to the Republic of Ireland by a British monarch.

February 6-June 5, 2012 - Celebrations take place throughout the United Kingdom and the Commonwealth for the Queen's Diamond Jubilee, or 60th anniversary, on the throne. Festivities highlights include a 1,000 boat flotilla along the River Thames and a concert at Buckingham Palace.

November 20, 2012 - The Queen and Prince Philip celebrate their 65th wedding anniversary.

December 18, 2012 - Queen Elizabeth II attends a cabinet meeting at 10 Downing St, marking the end of the celebration of her Diamond Jubilee. It is the first time a British monarch has attended a cabinet meeting in more than 100 years.

March 3-4, 2013 - Is admitted to King Edward VII's Hospital after experiencing symptoms of gastroenteritis. She is released the following day.

June 2, 2013 - Services at Westminster Abbey mark the 60th anniversary of the Queen's coronation.

June 20, 2013 - The Royal Ascot signature race is won by Estimate, the Queen's horse. The Gold Cup win makes the Queen the first reigning British monarch to win Ascot's biggest race.

April 8, 2014 - The Queen hosts a state dinner for Ireland's president Michael D. Higgins and his wife Sabina. Also in attendance are actors Daniel Day-Lewis and Dame Judi Dench. Martin McGuinness, former IRA commander and current Northern Ireland's Deputy First Minister, also attended.

Current line of succession:

1. The Prince of Wales, Prince Charles (1948)

2. The Duke of Cambridge, Prince William, eldest son of Prince Charles (1982)

3. Prince George of Cambridge, son of Prince William (2013)

4. Prince Henry of Wales, younger son of Prince Charles (1984)

5.The Duke of York, Prince Andrew, second son of Queen Elizabeth II (1960)

6. Princess Beatrice of York, elder daughter of Prince Andrew (1988)

7. Princess Eugenie of York, younger daughter of Prince Andrew (1990)

8. The Earl of Wessex, Prince Edward, youngest son of Queen Elizabeth II (1964)

9. Viscount Severn, James Windsor, son of Edward, The Earl of Wessex (2002)

10. The Lady Louise Mountbatten Windsor, daughter of Edward, The Earl of Wessex (2003)