Retiro is the district defined by the park. Madrid's 125-hectare Parque del Retiro — with its formal gardens, Crystal Palace, boat pond, and over-100-year-old trees — forms the western anchor of the neighborhood, and the streets that ring it (Calle de Alfonso XII on the west, Calle de Menéndez Pelayo on the east) are among the most coveted addresses in Madrid for buyers who prioritize daily green space over retail proximity. The Prado, the Reina Sofía, and the Jardín Botánico all sit along or adjacent to the park's western edge. This is the calmest of the classical-Madrid districts — residential first, cultural second, commercial a distant third.