Retiro Park

For two hundred years, this 125-hectare garden was the private playground of Spanish royalty — off-limits to common people, guarded by walls, and filled with peacocks, fountains, and theatrical stages built for an audience of kings. The park only opened to the public in 1868, after Queen Isabella II was overthrown and exiled. The revolution literally gave Madrid its favorite park.

The Retiro was originally part of a vast royal palace complex built for Philip IV in the 1630s. The palace itself was destroyed during the Napoleonic Wars — French troops used it as a barracks and fortification, and it was largely demolished. All that remains of the original Buen Retiro Palace is the Salon de Reinos (Hall of Realms) and the Cason del Buen Retiro, both now administered by the Prado. But the gardens survived and grew.

The Crystal Palace alone is worth the visit. Built in 1887 by architect Ricardo Velazquez Bosco, it's a soaring glass-and-iron greenhouse originally designed to display tropical plants from the Philippines for a colonial exposition. The Spanish-American War of 1898 ended the Philippines connection, and the building became an art space — it now hosts temporary exhibitions for the Reina Sofia. Stand inside when the light pours through the glass ceiling and the turtles paddle in the artificial lake outside, and you'll understand why locals consider it the most beautiful building in Madrid.

In 2021, the Retiro was inscribed as a UNESCO World Heritage Site along with the Paseo del Prado. The park's central lake, where you can rent rowboats under the gaze of a massive Alfonso XII monument, is the social heart of Madrid on weekends. Fortune tellers, puppet shows, and a lone man who's been playing crystal glasses by the lake for decades — the Retiro is a city within a city.