The Buen Retiro Park (Spanish: Parque del Buen Retiro, literally "Park of the Pleasant Retreat", or simply El Retiro) is the one of the largest parks of the city of Madrid, Spain. The park belonged to the Spanish Monarchy until the late 19th century, when it became a public park.
Location
The Buen Retiro Park is a large and popular 1.4 km2 (350 acres) park at the edge of the city center, very close to the Puerta de Alcalá and not far from the Prado Museum. A magnificent park, filled with beautiful sculpture and monuments, galleries, a peaceful lake and host to a variety of events, it is one of Madrid's premier attractions. The park is entirely surrounded by the present-day city.
http://en.wikipedia.org/wiki/Buen_Retiro_Park