The Mysterious Cities of Gold
The story is set in 1532. A young Spanish boy named Esteban joins a voyage to the New World in search of the lost Cities of Gold. He hopes to find his father, from whom he was separated on being rescued from a sinking ship by Magellan's expedition. On arrival in South America Esteban and his companions begin uncovering evidence relating to the Cities of Gold and various ancient technologies, and also become deeply embroiled in a conflict between the Spanish, the various native populations and later, a strange race called the Olmecs.
Comment: For more on the subject, see TV Shows Featuring Indians.