Located near the confluence of Brazil, Argentina and Paraguay, Itaipu Dam is considered one of the modern Seven Wonders, with a length of 4.5 miles (7.2 kilometres) and a height of 65 stories with a maximum flow of 40 times stronger than the nearby Iguazu Falls. The hydroelectric dam produces nearly 20 percent of Brazil's electricity; When you are in the city of Foz do Iguaçu, you can go on wonderful tours near this dam to see how it works and to enjoy the majestic scenery.