The Itaipu Hydroelectric Power Plant, largest in operation in the world, is a binational undertaking developed by Brazil and Paraguay in the Paraná River. The installed power of the plant is 12,600 MW (megawatts), with 18 generator units of 700 MW each.
The Golden Gate Bridge is known as one of the most beautiful bridges in the world. It is estimated that about nine million people from around the world visit the Bridge each year (1989 survey by San Francisco Convention and Visitor Bureau).