Outdoor sunken courtyard pictures

Quick answer：

Outdoor sunken courtyards are a type of architectural feature where a courtyard is situated below ground level, creating a more private and secluded space. These courtyards are often found in traditional Asian architecture and can include various elements such as gardens, water features, and pavilions. They are designed to provide a serene and tranquil environment, separate from the hustle and bustle of the outside world.