Anyone who grew up in the eighties will remember the Mysterious Cities of Gold. This is a cartoon series, set in the 16th century, and is centred on three children, Esteban, Zia and Tao. The story is about Esteban searching for one of the seven Cities of Gold in order to find his father. Along the way he makes many friends and enemies including the highly advanced Olmecs and let's not forget the Spanish. They find, and use, many new inventions including a solar powered plane designed in the image of a Condor and a solar powered ocean ship. There are a total of 36 episodes and despite being from the 80's, makes fantastic viewing.