The cloister of Milan Cathedral is 230 feet long and 65 feet wide, with a total area of 8,550 square feet. It was built in the 15th century by Giovanni Antonio Amadeo, a master architect from Lombardy. The four sides are covered by an arcade supported by seventy-eight columns made out of pink Verona marble. The walls are adorned with sculptures depicting scenes from the Old Testament as well as various saints and martyrs. In addition to its size, the cloister also features intricate decorative elements such as rose windows and polychrome terracotta figures.