Buen Retiro Park
Plaza de la Independencia, 7, Retiro
A royal retreat until the 19th-century, the city's main park is dotted with evidence of its princely origins, whether it's the Paseo de la Argentina with its flank of royal statues, the Palacio de Cristal, a former greenhouse for rare species from the Philippines (now an art space curated by the Reina Sofía), or the 18th-century Neoclassical observatory. Today it's simply where locals gravitate for a dose of the outdoors. The park bustles with visitors year-round and offers numerous activities, thanks to outdoor Flamenco concerts, new exhibits, boat rides on the man-made Estanque lake, and the rose garden. Photo: Håkan Svensson