Welcome to the heart of Spanish history. You are standing in the Plaza de la Armería, positioned between the grand Royal Palace of Madrid and the Almudena Cathedral. Take a moment to look around. The sheer scale of this building is staggering.[3] With one hundred and thirty-five thousand square meters of floor space and three thousand four hundred and eighteen rooms, this is officially the largest royal palace in Western Europe, almost double the size of Buckingham Palace or Versailles. While it remains the official residence of the Spanish royal family, the current King, Felipe the Sixth, and Queen Letizia actually live in the more modest Zarzuela Palace on the outskirts of the city, using this monumental space only for state ceremonies and official receptions. As you begin your journey, imagine this site not as a stone palace, but as the nine-hundred-year-old fortress that once stood here, protecting what was then a small frontier town.