On a rainy afternoon in Barrio de las Letras, you can explore the rich cultural heritage of Madrid by visiting one of the many museums in the area. The Museo del Prado, located in the heart of the neighborhood, is home to an extensive collection of European art, including masterpieces by renowned artists such as Velázquez, Goya, and El Greco. Another option is the Thyssen-Bornemisza Museum, which houses a diverse collection of art from different periods and styles. Spend your afternoon immersing yourself in the world of art and history, and let the rain outside enhance your museum experience.