minimum sunken courtyard in real life

Quick answer：

A minimum sunken courtyard, also known as a sunken garden, is a type of outdoor space that is lower than the surrounding ground level. These courtyards are often used in traditional Chinese gardens, where they serve as a tranquil retreat. They are characterized by their serene atmosphere, which is created through the use of water features, plants, and sometimes architectural elements. Sunken courtyards can be found in various styles and sizes, ranging from small, intimate spaces to larger, more elaborate gardens.