El Dorado

El Dorado is a mythical city/empire rumored to be somewhere in South America. The

Tomb Raider
El Dorado was used is an early story concept of Tomb Raider.

El Dorado is hidden in the dense jungles of Brazil, East of Xingu River. It is there Arther Hamilton Graves and the Chaos Raiders had found the first piece of Scion in the heart of El Dorado. The Scion hovered in the air above the Shrine of Xolotol in an unearhtly beam of light.

Lara Cruz followed Hamilton's journal to El Dorado and found the Scion piece still on the altar. She was attacked by the Scion guardian Xolotol itself, but she managed to kill it and take the Scion.

Shadow of the Tomb Raider
El Dorado is mentioned in a document, also named El Dorado, in Shadow of the Tomb Raider. It is part of Search for the Hidden City artifact collection. The document summarizes the myth and it's evolution. It's possible that Paititi is the fabled city of El Dorado.

Tomb Raider: Journeys
Lara Croft finds a coin from El Dorado with the ghost pirates of the Bonny Rider. After completing their task, the ghosts disappear, and Lara is washed ashore in Peru near a small fishing village. With the help of a local boy, Eduardo, she finds the door to El Dorado. It is a city underground build in a mine. Lara and a local man, José, enter the city and find three amulets, Lara takes only two as the third is certainly booby-trapped. A band of mercenaries followed them there, and took the third amulet springing the trap that flooded the city in lava, burying it.