Lezama Park, Public park in San Telmo, Argentina.

Lezama Park is a public park in San Telmo, Buenos Aires, covering 8 hectares. A straight reddish-brown brick walkway runs between strips of grass, lined with low stone benches and pedestals; a dark metal lamppost with a lantern head stands on the right. At the path's end, a white open-air gazebo with a smooth dome, six round columns and a small finial sits on a stepped base, flanked by white statues on pedestals.

Manuel Gallego y Valcárcel acquired the land in 1790, before Charles Ridgley Horne built a baroque mansion on the site. The city later converted the estate into a public park and established the National Museum there in 1897.

The park's name comes from José Gregorio de Lezama, who bought the land in 1857 and had Belgian landscaper Charles Vereecke lay out the grounds; his widow Ángela de Álzaga sold them to the city in 1894 on condition the park bear his name. The Defensa Street mansion became the National Historical Museum in 1897, and the Russian Orthodox Church facing the park was inaugurated in 1901.

The park is bounded by Defensa and Brasil streets and Martín García and Paseo Colón avenues, with a steep barranca dropping toward the last two. The San Juan station on Line C of the subway lies nearby. The perimeter gates removed in 1931 were reinstated under the 2008 restoration plan.

The eastern slope marks where Pedro de Mendoza attempted the first settlement of Buenos Aires in 1536. This hillside was then a shoreline along the Río de la Plata, before landfill shifted the coast.