"Solar City Tower", built atop the island of Cotonduba, will be the welcome symbol to the 2016 Olympic Games in Rio de Janeiro.
It will be seen by the game visitors and participants as they arrive by air or water.
The tower, captures solar energy. It will supply energy for all of the Olympic city, as well as also for part of Rio.
It pumps up water from the ocean to create what appears like a water fall and this fall stimulates turbines that produce energy during the night.
It will also hold the Olympic flame.