Msheireb Downtown Doha is a planned city in Doha, Qatar being constructed in place of the current district of Mushayrib. It is promoted as being the world's first sustainable downtown regeneration project and one of the smartest cities on earth, strategically located in the heart of Doha. Initial construction began in January 2010. Located in the downtown area of Qatar's capital city, it is set to occupy 310,000 sq m with the total cost of construction amounting to approximately $5.5 billion. It was launched in six phases by Msheireb Properties, a subsidiary of Qatar Foundation.