The pedestrian traffic signals in Brazil's teeming metropolis light up with clues to nearby landmarks.

As one of the world's largest hydroelectric dams this plant took two countries to get built.

A series of waterfalls so massive they straddle the border of Argentina and Brazil.

One of São Paulo's tight urban intersections has become a haven for graffiti artists ever since a single Batman started the trend.

Once the "Eighth Wonder of the World," this iron railroad bridge was decimated by a tornado.