Hand-drawn green roof in foreign countries

Quick answer：

Green roofs, also known as living roofs or eco-roofs, are roofs that are partially or completely covered with vegetation and a growing medium, planted over a waterproofing membrane. They are becoming increasingly popular in many countries for their environmental benefits, such as reducing urban heat islands, improving air quality, and providing additional insulation. Hand-drawn illustrations of green roofs can be found in architectural design, landscape planning, and environmental education materials. These illustrations help visualize the potential of green roofs in urban settings and demonstrate their aesthetic appeal.