skylight and sunken courtyard in real life

Quick answer：

Skylights and sunken courtyards are architectural features that bring natural light into buildings and create a sense of openness. Skylights are openings in the roof that allow light to enter, often used in attics or as decorative elements. Sunken courtyards, also known as below-grade courtyards, are outdoor spaces that are partially or entirely below the ground level of a building, often used for gardens or recreational areas.