St. James's Park is a 23 hectare (58 acre) park in Westminster, central London, the oldest of the Royal Parks of London. The park lies at the Southernmost tip of the St. James's area, which was named after a leper hospital dedicated to St. James the Less.
St. James's Park is bounded by Buckingham Palace to the West, The Mall and St. James's Palace to the North, Horse Guards to the East, and Birdcage Walk to the South.