Sustainable architecture is a type of architecture that focuses on building or renovating buildings to use fewer resources and help protect the environment. It is also known as green building, eco-friendly building, or environmentally friendly architecture. Sustainable architecture tries to use renewable energy, like solar energy, and to use items that can be easily reused or recycled. Sustainable architecture also focuses on using materials that don't have a negative impact on the environment, such as those made from natural resources. Sustainable architecture also seeks to maximize the efficiency of a building to conserve energy, and water. This means that sustainable buildings have healthy insulation to keep them cool in the summer and warm in the winter without using too much energy. The building also has efficient plumbing and lighting to conserve water and energy. Finally, sustainable architecture puts an emphasis on using natural materials and vegetation to help improve the environment. For example, adding green roofs and walls helps protect the environment, as well as providing habitat for birds and other wildlife.