Grand Army Plaza lies at the intersection of Central Park South and Fifth Avenue in front of the Plaza Hotel in Manhattan, New York City. It stretches from 60th to 58th streets between East Drive and Fifth Avenue. The idea for such a plaza was first proposed by sculptor Karl Bitter in 1898. Wikipedia

Hyde Park is one of the largest parks in London, and one of the Royal Parks of London, famous for its Speakers' Corner. The park was the site of the Great Exhibition of 1851, for which the Crystal Palace was designed by Joseph Paxton. Wikipedia