The history of Madrid's museum district is intrinsically linked to the urban development of the Paseo del Prado. In the 18th century, King Charles III envisioned this area as a grand, tree-lined axis dedicated to science and culture. The building that now houses the Prado Museum was originally commissioned in 1785 to serve as the Royal Cabinet of Natural History.
Following the disruptions of the Peninsular War, King Ferdinand VII repurposed the majestic building to house the royal painting and sculpture collections. The Museo del Prado officially opened to the public in 1819, establishing the area as a cultural hub.
In the late 20th century, the 'Golden Triangle' concept was formalized. The Museo Nacional Centro de Arte Reina Sofía, housed in an expansive former 18th-century hospital, opened in 1990 to showcase modern and contemporary art, famously including Picasso's *Guernica*. In 1992, the Thyssen-Bornemisza Museum opened in the Villahermosa Palace, filling the historical gaps between the collections of the Prado and Reina Sofía. Today, the district continues to evolve, incorporating smaller galleries, cultural centers, and expanded exhibition spaces.