"This reclaimed land gives Sri Lanka a chance to redraw the map and to build a city of world class proportions and functionality - and compete with Dubai or Singapore," Saliya Wickramasuriya, a member of the Colombo Port City Economic Commission, told the BBC.
But critics question how much of an economic game changer it will really be for Sri Lanka. For a start, in order to reclaim the 665 acres (2.6 sq km) of new land, the country needed the China Harbour Engineering Company (CHEC) to invest $1.4bn. In return, the firm has been given 43% of it on a 99-year lease.