Design of sunken courtyard in front of a villa

Quick answer：

The design of a sunken courtyard in front of a villa is a landscape architecture technique that creates a courtyard below ground level. It can be used to create a sense of privacy, add depth to the garden, and can include features such as a water feature, garden beds, or seating areas. The design considerations include drainage, soil selection, and structural integrity to ensure the stability and functionality of the sunken area.