The Gran Torre Santiago (Spanish: Great Santiago Tower), previously known as Gran Costanera Tower, is a skyscraper under construction in Santiago, Chile. In February 2011 it became the tallest building in South America.
Gran Torre Santiago is part of the Costanera Center complex, which will include a shopping mall, two hotels and two additional office towers. Gran Torre Santiago will be 300 metres (980 ft) tall and 70 stories high with a floor pitch of 4.1 metres (13 ft). It was designed by Cesar Pelli, Chilean architects Alemparte Barreda y Asociados, and by the Canadian company Watt International. Structural engineering is performed by the Chilean company René Lagos y Asociados Ing. Civiles Ltda.