Run with us through the heart of Madrid: The Puerta del Sol. Find out where its name came from, why it’s known all over Spain and its relationship with the Royal Palace. Learn about Madrid’s architecture and Charles III’s chief architect, Sabatini, as you go running down the Calle Alcalá toward the Plaza de Cibeles. Gaze at the neoclassic grandiosity of the Puerta de Alcalá, which is Europe’s oldest arch, and bask in the beauty of the Parque del Retiro: One of the world’s most beautiful parks to run in whose origins date back to the 17th century and have a fascinating history behind it. Later on, run through Madrid’s literary district and experience the unique splendor and antiquity of the Austria dynasty in Madrid’s old quarter.