Fountain of the Fallen Angel - Fuente del Ãngel CaÃdo, Parque del Retiro - El Retiro Park, Plaza de la Independencia, 7, 28001 Madrid, Spain.nThe Buen Retiro or El Retiro Parkis one of the largest parks of the city of Madrid. The park belonged to the Spanish Monarchy until the late 19th century, when it became a public park. In 2021, Buen Retiro Park became part of a combined UNESCO World Heritage Site with Paseo del Prado.