The process and product of designing, planning and constructing buildings and other structures is known as architecture. Modern architecture considers the everyday needs of people and uses technology to create habitat environments. One of the mainstream issues of modern architecture is environmental sustainability. Environmentally sustained designs, such as solar building design and greener roof designs and the use of biodegradable materials, are being explored. The process by which the material and design integrity of built heritage are prolonged by thoroughly planned interventions is known as the architectural restoration. It deals with the preservation of the true form and style of the architecture and its constituent materials such as stone, metal, glass, wood and bricks.