Phoenix Park is the largest closed park in Europe, it was established in 1660 as a royal hunting park, until 1747 AD when it was opened to the public, so it is natural to see some deer roaming inside. You can walk or run, and if you love sports, you can participate in cricket, polo, jumping and many other games, and if you do not like doing any of these activities you can still take a horse carriage ride around the place. The park is open to all throughout the day.