Piazza d'Italia in New Orleans is the masterpiece of Charles Moore, one of the representative figures of American postmodernism, and one of the representative works of postmodernist architectural design. The city of New Orleans in the United States is a city with a high concentration of Italian immigrants. The entire square is centered on the island of Sicily in the map model. Square paving materials form a circle of concentric circles, that is, centered on Sicily. The square has two access roads connected to the street, an arch at the entrance, the other for the gazebo, are similar to the ancient Roman architecture. These architectural images on the square field unmistakably show that it is the continuation of Italian architectural culture.