Residential sunken courtyard scene

Quick answer：

A sunken courtyard in residential architecture refers to a courtyard that is lower in elevation compared to the surrounding ground level. Such designs are often used to enhance privacy, provide a quiet retreat, or to create a sense of space. In modern residential design, sunken courtyards can serve various functions, including recreational areas, gardens, or as a space for outdoor activities. They can be found in both traditional and contemporary architectural styles.