Famous circular square design

Quick answer：

The famous circular square design refers to the architectural and urban planning features of circular squares. These squares are often used in urban design for aesthetic and functional reasons. They serve as public spaces for social gatherings, events, and as landmarks. Examples include the Piazza del Campidoglio in Rome and the Piazza San Marco in Venice. Circular squares are known for their symmetry, which can enhance the visual impact of the surrounding buildings and the overall urban environment.