Covering over 125 hectares and comprising more than 15,000 trees, El Retiro Park is a green oasis in the heart of the city. In it you’ll find all kinds of interesting monuments and gardens, including the Jardín de Vivaces, the Jardines de Cecilio Rodríguez (Andalusian-inspired classicistic gardens), the Jardines del Arquitecto Herrero Palacios, the Rosaleda rose garden and the Parterre Francés, which holds a Mexican conifer that is nearly 400 years old and is believed to be Madrid’s oldest tree. https://www.esmadrid.com/en/tourist-information/parque-del-retiro