The Costanera Center in Santiago, Chile which will include the tallest building in South America has been on the boards for some time, and an opening date of 2012 has finally been announced! Located in the Providencia region of the country’s capital, the mixed-use development will include four buildings of varying height surrounding a mall. One of those buildings will reach 300 meters, which will make it the tallest building in South America. The whole complex is aiming for LEED Gold certification, and will utilize various sustainable design strategies.