Effect of indoor sunken courtyard

Quick answer：

An indoor sunken courtyard refers to a courtyard or garden that is situated below the ground level of a building. These spaces are often designed to provide privacy, greenery, and a sense of tranquility within an urban environment. The effect of such a courtyard can include lush plants, water features, and seating areas, enhancing the indoor living experience. The architectural design and layout of an indoor sunken courtyard must consider factors such as natural lighting, ventilation, and integration with the rest of the building.