London's Hyde Park is one of the largest parks in the city, located in the heart of London. It was opened to the public in 1637 by King Charles I and has since become a popular destination for locals and tourists alike. The park is home to many attractions, including the Serpentine lake, the Diana Memorial Fountain, and the Speakers' Corner. It is also a popular spot for outdoor activities such as picnicking, boating, and horse riding.