Hyde Park is the most famous park in London. Hyde Park is the largest Royal Park in Britain. In the 16th century, King Henry VIII used it as a royal park. During the reign of Charles I, Hyde Park was open to the public. At the busiest time of the year, the King's birthday was celebrated with a salute ceremony. At that time, Hyde Park was beautiful and colorful. The audience gathered in all directions like a tide. At 11 a.m., the Royal Artillery and Horses came to the parade from the marble archway. After 41 salutes were fired, the Gunners loaded their cannons in a carriage, then flew on their horses and headed for the camp north of London. Of the 41 salutes, 21 were to celebrate the king's birthday and 20 were to salute the capital, London.