The construction of Milan Cathedral, known as Duomo di Milano, began in 1386 under Archbishop Antonio da Saluzzo and Gian Galeazzo Visconti, the first Duke of Milan. Initially intended to be built in brick, the vision quickly evolved to a grand Gothic structure entirely in marble, sourced from the Candoglia quarries. The sheer ambition of the project meant its construction spanned over six centuries, involving numerous architects, sculptors, and artisans. The iconic spires and countless statues, including the golden Madonnina atop the tallest spire, were added over generations. The Terraces themselves, an integral part of the cathedral's design, evolved as an accessible rooftop space over time, allowing visitors to appreciate the intricate details of the upper structure and the vast panorama. Napoleon Bonaparte notably commissioned the completion of the facade in the early 19th century. The final details and some restorations continued well into the 20th century, making the Duomo a living testament to centuries of art, faith, and architectural evolution, with its terraces offering a unique glimpse into this enduring legacy.