London is full of huge parks which the locals refer to as the lungs of the city. Hyde Park is one of the biggest and best known. Another of Henry VIII's hunting grounds, it is now a place of concerts, art and horse-riding. The famous Peter Pan sculpture is in the park, as is the Princess Diana memorial fountain.
You can row boats on the Serpentine lake, sit on The Lido in the summer or even swim if you are brave enough. Head to Speakers Corner, the home of free speech. In winter, the park has an ice rink for skating. But most people just bring a picnic and a football or a book, and while away the day in fresh air surrounded by rolling lawns and majestic trees.
Hyde Park is very easy to get to by bus or tube train. Bordered by Park Lane in Mayfair, Knightsbridge, the Royal Albert Hall, the Bayswater, Notting Hill, and Holland Park areas, it's right in the center of everything with many entrance gates.