It is run at Ascot over a distance of 1 mile (1,609 metres), and is scheduled to take place each year in June.
The event was established in 1840, and during the early part of its history it was called the Trial Stakes.
In 1930, it was renamed in honour of Queen Anne, the founder of Ascot Racecourse.
It was given Group 1 status in 2003, and at this point the minimum age of participating horses was raised to four.
It is now the first race on the opening day of the Royal Ascot meeting.