Roof water feature

Quick answer：

A roof water feature refers to a decorative element or structure that incorporates water into the design of a rooftop. These features can range from small fountains and ponds to larger waterfalls and cascades. They are often used for aesthetic purposes and can provide a sense of tranquility. Roof water features can also serve functional roles such as providing irrigation or collecting rainwater. The design and implementation of such features require careful consideration of structural integrity and environmental factors.