Sustainable architecture is a design approach that aims to minimize the environmental impacts of buildings. Recyclable materials, energy efficiency and the use of natural resources are the cornerstones of this type of architecture. Green buildings stand out with technologies such as solar energy systems and rainwater collection. Certificates such as LEED and BREEAM have an important place in this field in the world. CopenHill in Denmark, in particular, attracts attention by offering both a waste incineration facility and a ski slope together. The number of ecological architectural projects is gradually increasing in Turkey. Such structures offer a sustainable living space in touch with nature. In the future, environmental sensitivity will become one of the basic criteria of architecture. Sustainable designs not only protect nature but also provide long-term economic gains. This field holds new opportunities and responsibilities for architects.