The Campo de Marte is one of the largest parks in the metropolitan area of Lima, capital city of Peru. Similar in size to Parque de la Exposición and Parque de la Reserva. Campo de Marte originally was part of Exposición and later a horse racetrack, the Hipódromo de Santa Beatriz (before Jesús María Ward was split from downtown Lima Ward), in operation from 1903 to 1938.