The smallest sunken courtyard floor plan

Quick answer：

A sunken courtyard, also known as a sunken garden or pit garden, is a type of courtyard or garden that is below the level of the surrounding area. The floor plan of the smallest sunken courtyard typically includes details about the layout, dimensions, and architectural features of the space. This may involve the placement of buildings, pathways, planting areas, and other structural elements. Sunken courtyards are often used for privacy, security, or aesthetic purposes.