The Monastery of El Escorial, a UNESCO World Heritage Site since 1984, is a remarkable architectural feat of the Spanish Golden Age. It embodies the cultural aspirations of that era, blending Italian and Flemish artistic styles at the behest of King Philip II. This vast complex not only served as a royal residence but also as a monastery, school, and library, housing precious manuscripts from the 15th and 16th centuries. Its Royal Library stands as a testament to the intellectual pursuits of the time, preserving a rich collection of historical documents within its walls.