Green architecture, also known as sustainable architecture, focuses on minimizing the environmental impact of buildings. Key elements include energy efficiency, using renewable energy sources like solar and wind, and employing sustainable or recycled materials. 

Green architecture also emphasizes efficient use of space and resources, water conservation through techniques like rainwater harvesting, and improving indoor environmental quality with natural lighting and ventilation. Additionally, it involves integrating the building into the surrounding environment in a harmonious way and considering the entire building's lifecycle to reduce its overall footprint. 

By focusing on these elements, green architecture aims to create buildings that are environmentally responsible and resource-efficient throughout their lifecycle.